Average score
Product 1: Logitech G309 Lightspeed
3.9
Product 2: ASUS ROG Keris II Ace
4.3
2.4GHz connectivity
Product 1: Logitech G309 Lightspeed
4.5

Reviews consistently describe two wireless paths: Lightspeed through a USB receiver or dongle and Bluetooth. Lightspeed is framed as the performance-first option.

Product 2: ASUS ROG Keris II Ace
4.6

Reviews that discussed wireless modes consistently describe 2.4GHz connectivity as a core option alongside Bluetooth and wired use. The evidence supports strong coverage for 2.4GHz operation, including receiver storage, tri-mode connectivity, and pairing through the main wireless receiver.

acceleration control
Product 1: Logitech G309 Lightspeed
4.7

Acceleration evidence is limited but positive where discussed: reviewers cite the Hero sensor's 40G acceleration support and zero smoothing, filtering, or acceleration claims.

Product 2: ASUS ROG Keris II Ace
4.8

Sensor acceleration specs were consistently described as high-end, with reviewers citing 50G acceleration alongside 750 IPS speed. The evidence supports strong acceleration capability, though it is presented as sensor performance rather than a separate user-facing tuning feature.

Accuracy and tracking precision
Product 1: Logitech G309 Lightspeed
4.6

Tracking and aim precision are strong themes across reviews, with the mouse described as accurate, precise, quick, and dependable in games and productivity.

Product 2: ASUS ROG Keris II Ace
4.7

Tracking precision was repeatedly praised. Reviewers described near-perfect accuracy, high precision, accurate tracking, and jitter-free performance, with only one review noting high-DPI irregularity at extreme settings.

balance and weight distribution
Product 1: Logitech G309 Lightspeed
2.7

Balance is mixed. Reviews that focus on weight distribution often find the AA battery makes the mouse rear-heavy or concentrated toward the center-rear.

Product 2: ASUS ROG Keris II Ace
4.5

Most reviewers who discussed balance found the mouse light and well balanced. One teardown-style review noted a slightly forward balance point, but the broader evidence describes the mouse as comfortable to move without obvious front or rear weight bias.

battery life
Product 1: Logitech G309 Lightspeed
4.4

Battery life is a major strength. Reviews repeatedly cite about 300 hours over Lightspeed or AA power and up to 600 hours over Bluetooth, with PowerPlay removing normal battery worries.

Product 2: ASUS ROG Keris II Ace
4.3

Battery life is generally strong, with many reviews citing 107 hours at 2.4GHz with lighting off or strong real-world endurance. Higher polling rates and RGB reduce runtime, and one review measured lower Wi-Fi runtime with default lighting.

Bluetooth support
Product 1: Logitech G309 Lightspeed
4.5

Bluetooth support is broadly confirmed and useful. Reviewers use it for laptops, work devices, travel, and quick switching alongside Lightspeed.

Product 2: ASUS ROG Keris II Ace
4.5

Bluetooth support is widely confirmed and treated as a useful convenience feature. Reviews describe Bluetooth pairing, multi-device Bluetooth use, and longer battery life in Bluetooth mode, while noting that it is not the low-latency competitive mode.

build quality
Product 1: Logitech G309 Lightspeed
4.4

Build quality is generally positive, with reviewers calling it sturdy, well-built, secure, and resistant to flex. The design is simple rather than flashy.

Product 2: ASUS ROG Keris II Ace
4.3

Build quality is mostly positive, with reviewers describing a sturdy, solid shell and little flex or creaking. A few reviewers found the build merely average or noted minor rattle, so the evidence is strong but not flawless.

button customization
Product 1: Logitech G309 Lightspeed
4.1

Button customization is well supported through Logitech G Hub, with remapping, assignments, sensitivity profiles, and customizable controls noted across reviews.

Product 2: ASUS ROG Keris II Ace
4.4

Button customization is well supported through Armoury Crate or onboard controls. Reviewers cite remapping inputs, assigning commands, programmable controls, and hardware-based adjustments for key settings.

button responsiveness
Product 1: Logitech G309 Lightspeed
4.2

Button responsiveness is strong overall. Primary clicks are repeatedly described as responsive, fast, snappy, and easy to actuate, though some secondary inputs are less praised.

Product 2: ASUS ROG Keris II Ace
4.7

Button responsiveness is consistently praised. Reviewers cite snappy registration, lightning-quick actuation, responsive clicks, and short-travel optical buttons that support fast inputs.

cable flexibility
Product 1: Logitech G309 Lightspeed
No score yet
Product 2: ASUS ROG Keris II Ace
4.5

Cable flexibility is a strength overall. Several reviewers praised the paracord as flexible, tangle-free, or drag-reducing, though one reviewer found it long enough but somewhat stiff while charging.

charging convenience
Product 1: Logitech G309 Lightspeed
4.3

Charging convenience depends heavily on PowerPlay. With PowerPlay it offers cable-free, battery-free use, but reviews note the accessory cost and lack of USB-C charging.

Product 2: ASUS ROG Keris II Ace
4.0

Charging and setup convenience are mixed. One review says USB-C charging is quick and painless, while another liked the adapter/booster setup but noted the connection stack could feel loose.

claw grip comfort
Product 1: Logitech G309 Lightspeed
3.9

Claw grip comfort is mixed but often positive. Several reviewers liked the claw-oriented shape, while one found the flatter button profile less ideal for claw grip.

Product 2: ASUS ROG Keris II Ace
4.4

Claw grip comfort is supported for many hand sizes. Reviews mention all-grip compatibility, relaxed claw comfort, and claw grip usefulness, though one detailed review cautions that fit depends on hand size.

click latency
Product 1: Logitech G309 Lightspeed
4.0

Click latency evidence is narrow but favorable where discussed. Reviewers connect Lightspeed, optical-only behavior, and quick reporting with lower latency.

Product 2: ASUS ROG Keris II Ace
4.6

Click latency is a clear strength. Reviews cite latency reduction from high polling, measured low click latency, no latency issues, and low wireless click latency measurements.

click noise
Product 1: Logitech G309 Lightspeed
3.0

Click-noise evidence is limited. One review explicitly says the clicks are a little loud, so this area is not a quiet-mouse strength.

Product 2: ASUS ROG Keris II Ace
4.4

Click noise is mixed but generally acceptable. Some reviews described the switches as quiet or quieter than competitors, while another found the optical clicks loud.

connection stability
Product 1: Logitech G309 Lightspeed
4.3

Connection stability is generally good. Reviews report strong wireless behavior, no hiccups, no lag, and reliable dongle or Bluetooth operation.

Product 2: ASUS ROG Keris II Ace
4.7

Connection stability is strong across the reviews that tested it. Reviewers mention tri-mode connectivity, no delays, no hiccups, no dropouts, and stable Bluetooth or wireless switching.

cross-platform compatibility
Product 1: Logitech G309 Lightspeed
4.3

Cross-platform evidence is positive where tested, including Windows, macOS or G Hub, Chrome OS, Android, iPad, work laptops, and dual-device use.

Product 2: ASUS ROG Keris II Ace
4.6

Cross-device use is supported mainly through Bluetooth and multi-device pairing. Reviewers cite simultaneous pairing with multiple devices, multi-device setup versatility, and the ability to pair up to three devices.

debounce customization
Product 1: Logitech G309 Lightspeed
1.5

Debounce customization is weak. TechRadar explicitly notes the absence of debounce-time adjustments along with other advanced tuning options.

Product 2: ASUS ROG Keris II Ace
2.3

Debounce customization is weak. The available evidence says debounce was 0ms and not adjustable, and another review states there was no debounce setting in the software.

DPI range
Product 1: Logitech G309 Lightspeed
4.3

The DPI range is strong, with multiple reviews citing 100 to 25,600 DPI, 25,600 max DPI, or flexible sensitivity presets.

Product 2: ASUS ROG Keris II Ace
4.9

The DPI range is one of the clearest strengths. Reviewers repeatedly cite 42,000 DPI or CPI and describe it as unusually high, although some note that most users will not need the upper end.

durability over time
Product 1: Logitech G309 Lightspeed
4.0

Durability-over-time evidence is limited. The clearest long-use evidence is sturdy construction and skate condition after weeks, while one reviewer notes true long-term durability could not be tested.

Product 2: ASUS ROG Keris II Ace
4.6

Durability over time is supported mainly through switch behavior. One review specifically links optical switches to consistent long-term performance and reduced double-click risk.

ecosystem integration
Product 1: Logitech G309 Lightspeed
4.2

Logitech ecosystem integration is a meaningful strength through G Hub profiles, Lightspeed devices, and especially PowerPlay compatibility.

Product 2: ASUS ROG Keris II Ace
4.4

Ecosystem integration is present through Aura Sync and the ROG Omni receiver. Reviewers cite lighting sync with compatible devices and using one receiver for multiple ROG peripherals.

ergonomic design
Product 1: Logitech G309 Lightspeed
4.1

Ergonomics are generally good for mainstream use, though not universally ideal. Reviewers praise comfort and stability while also noting flatter sides or missing curves.

Product 2: ASUS ROG Keris II Ace
4.5

The design is clearly ergonomic and right-handed. Reviews describe the curved or ergonomic shape, often tying it to right-handed comfort and ultra-light wireless use.

fingertip grip comfort
Product 1: Logitech G309 Lightspeed
3.8

Fingertip comfort is discussed mainly in video reviews and is mostly acceptable, with the smaller shape and control position working better for some users than others.

Product 2: ASUS ROG Keris II Ace
3.4

Fingertip grip comfort is limited and hand-size dependent. One review says the light weight makes fingertip use possible with grip tape, while another does not recommend fingertip gripping the ergonomic shell.

firmware reliability
Product 1: Logitech G309 Lightspeed
3.7

Firmware reliability is mixed but functional. Some reviewers report easy updates, while one notes firmware updates require the Lightspeed receiver and can block customization until completed.

Product 2: ASUS ROG Keris II Ace
No score yet
FPS gaming suitability
Product 1: Logitech G309 Lightspeed
4.1

FPS suitability is strong for casual and mainstream competitive use. Reviews cite good performance in shooters, though the 1K polling rate and weight limit top-tier esports appeal.

Product 2: ASUS ROG Keris II Ace
4.8

FPS and esports suitability are consistently strong. Reviewers repeatedly frame the mouse around hard-core gameplay, competitive esports, FPS use, high polling, and precision aiming.

glide smoothness
Product 1: Logitech G309 Lightspeed
3.8

Glide is mostly positive, with reviewers praising smooth movement, low resistance, PTFE pads, and good desk or mousepad performance. A few criticize skate thinness or feel.

Product 2: ASUS ROG Keris II Ace
4.6

Glide smoothness is broadly praised. Reviewers cite PTFE feet, smooth glide, controlled movement, and good stock skates, including use on glass in some tests.

grip texture
Product 1: Logitech G309 Lightspeed
3.8

Grip texture is mixed. Included grip tape helps, but several reviewers find the smooth or grainy shell less premium or less secure without it.

Product 2: ASUS ROG Keris II Ace
3.7

Grip texture is the most divisive physical trait. Some reviewers liked the non-slip or textured surface and grip tape, while others found the coating slippery or not secure enough without aftermarket grips.

handedness options
Product 1: Logitech G309 Lightspeed
3.3

Handedness is mixed. The symmetrical body allows left- or right-hand holding, but side-button placement clearly favors right-handed use.

Product 2: ASUS ROG Keris II Ace
3.2

Handedness is limited. Evidence shows the mouse is comfortable for right-handers but not suited for lefties or users wanting an ambidextrous shape.

left and right click quality
Product 1: Logitech G309 Lightspeed
4.3

Left and right click quality is a clear strength. Reviewers praise the primary clicks as responsive, satisfying, light, tactile, and confidence-inspiring.

Product 2: ASUS ROG Keris II Ace
4.4

Left and right click quality is generally strong, with snappy, tactile, consistent, or solid click feedback across many reviews. Some detailed reviewers still criticized slipperiness or travel on the main buttons.

lift-off distance
Product 1: Logitech G309 Lightspeed
No score yet
Product 2: ASUS ROG Keris II Ace
4.2

Lift-off distance support is present through software or onboard controls, but not universally flexible. Reviews mention lift-off adjustment, low/high LOD options, and 1mm/2mm LOD limits.

long-session comfort
Product 1: Logitech G309 Lightspeed
3.7

Long-session comfort is mixed. Several reviews describe hours of comfortable use, while heavier battery setups and low-DPI play can cause fatigue for some.

Product 2: ASUS ROG Keris II Ace
4.7

Long-session comfort is strong where discussed. Reviewers cite no hand pain, low fatigue, and zero strain over prolonged play, helped by the low weight.

macro support
Product 1: Logitech G309 Lightspeed
4.0

Macro support is present through G Hub, with reviewers noting macro creation, recording, and remapping options.

Product 2: ASUS ROG Keris II Ace
4.4

Macro support is available through Armoury Crate. Reviews cite macro recording and saved macros in the software workflow.

materials quality
Product 1: Logitech G309 Lightspeed
3.8

Materials quality is generally serviceable rather than luxurious. Reviewers describe a sturdy plastic shell and useful material choices, but not a premium finish.

Product 2: ASUS ROG Keris II Ace
4.3

Materials quality is generally positive, with evidence for PBT buttons, bio-based nylon, rigid shell feel, and textured surfaces. Some reviewers still found the shell feel less premium than rubberized coatings.

MMO gaming suitability
Product 1: Logitech G309 Lightspeed
2.0

MMO suitability is weak. The six-button layout and limited extra controls are called insufficient for MMORPG-style needs.

Product 2: ASUS ROG Keris II Ace
4.0

MMO suitability is only lightly supported. One review used the mouse in Final Fantasy XIV raids and inventory management, but the review evidence does not present it as a dedicated MMO mouse.

MOBA gaming suitability
Product 1: Logitech G309 Lightspeed
3.3

MOBA suitability is mixed. Reviewers successfully used it in DOTA 2 and League of Legends, but also note it could use more side buttons.

Product 2: ASUS ROG Keris II Ace
No score yet
motion consistency
Product 1: Logitech G309 Lightspeed
4.5

Motion consistency is strong where tested, with reviewers noting quick swipes, accurate response, and consistent tracking.

Product 2: ASUS ROG Keris II Ace
4.6

Motion consistency is strong in gameplay, with reviewers citing smooth tracking, granular accuracy, and micro-adjustment precision. MotionSync is present but not configurable in one technical review.

onboard memory
Product 1: Logitech G309 Lightspeed
4.5

Onboard memory is well supported. Reviews note up to five custom profiles and onboard memory mode for carrying settings to systems without G Hub.

Product 2: ASUS ROG Keris II Ace
4.5

Onboard memory/profile support is present, with reviews citing hardware-based profiles, onboard controls, and profile switching without needing to keep the software open.

palm grip comfort
Product 1: Logitech G309 Lightspeed
3.8

Palm grip comfort is generally acceptable but size-dependent. Some reviewers praise improved palm support, while large-hand users may find it a little small.

Product 2: ASUS ROG Keris II Ace
4.4

Palm grip comfort is positive but not universal. Reviews describe comfortable palm or relaxed palm use, while hand size and the smaller ergonomic shape affect fit.

polling rate
Product 1: Logitech G309 Lightspeed
3.5

Polling rate is adequate but not cutting edge. Reviews cite 1,000Hz or 1K as standard, while noting the absence of higher-end 4K or 8K options.

Product 2: ASUS ROG Keris II Ace
4.7

Polling rate is a headline strength across nearly every review. Evidence repeatedly confirms 4,000Hz wireless polling and 8,000Hz wired polling through the included booster.

portability
Product 1: Logitech G309 Lightspeed
3.9

Portability is useful but imperfect. Dongle storage, AA power, Bluetooth, and travel use are praised, though one reviewer was blocked from G Hub customization after leaving the receiver behind.

Product 2: ASUS ROG Keris II Ace
4.5

Portability is supported through bundled accessories, dongle storage, and multi-device use. Reviewers mention grip tape, extra feet, and using one mouse across multiple devices or on the go.

premium feel
Product 1: Logitech G309 Lightspeed
4.3

Premium feel is mixed. Some reviewers describe premium or Pro-like impressions, while others say the mouse feels basic or not high-profile.

Product 2: ASUS ROG Keris II Ace
4.4

Premium feel is present but not unanimous. Some reviewers found the chassis premium and the mouse solid, while others criticized coating and click feel as less premium for the price.

profile switching
Product 1: Logitech G309 Lightspeed
4.2

Profile switching is a clear strength, with reviews citing five sensitivity profiles, DPI presets, top-button switching, and profile storage.

Product 2: ASUS ROG Keris II Ace
4.1

Profile switching is supported but placement is sometimes criticized. Reviewers cite scenario profiles, saved profiles, and button-combination profile switching, while some dislike the underside DPI/profile control.

programmable buttons
Product 1: Logitech G309 Lightspeed
4.0

Programmable buttons are supported, but limited by the six-button layout. Reviewers confirm remapping and assignable functions.

Product 2: ASUS ROG Keris II Ace
4.4

Programmable button coverage is solid for an esports mouse. Reviews cite five or six programmable buttons and programmable controls including scroll functions.

RGB features
Product 1: Logitech G309 Lightspeed
1.9

RGB is essentially absent. Reviewers repeatedly mention no RGB or minimal indicator lighting, sometimes as a minor complaint and sometimes as a battery-life benefit.

Product 2: ASUS ROG Keris II Ace
4.3

RGB features are modest but useful. Reviews focus on the single scroll-wheel RGB zone, customization, battery notifications, and keeping RGB without losing the low weight.

scroll wheel quality
Product 1: Logitech G309 Lightspeed
3.6

Scroll wheel quality is mixed. Reviewers like the tactile or notched feel, but several criticize stiffness, no free-scroll mode, or a heavy middle click.

Product 2: ASUS ROG Keris II Ace
3.7

Scroll wheel quality is mixed. Some reviewers praised tactile, quiet, or excellent scrolling, while others wanted clearer steps, adjustable resistance, or a more controlled encoder.

sensor performance
Product 1: Logitech G309 Lightspeed
4.2

Sensor performance is consistently positive. Reviews cite the Hero 25K sensor as precise, reliable, accurate, and strong for gaming and productivity.

Product 2: ASUS ROG Keris II Ace
4.8

Sensor performance is excellent overall. Reviewers cite an accurate high-end sensor, no tracking issue, top-tier performance, glass tracking, and no spinouts or jitter in normal testing.

shape comfort
Product 1: Logitech G309 Lightspeed
4.0

Shape comfort is broadly good but not universal. Many find the mouse comfortable and safe, while others call it generic, smaller, or less suited to some grips.

Product 2: ASUS ROG Keris II Ace
4.4

Shape comfort is a major strength for many reviewers, especially for relaxed claw, palm, and small-to-medium ergonomic preferences. A few reviewers reported hand-size mismatch or cramps.

side button quality
Product 1: Logitech G309 Lightspeed
3.9

Side button quality is generally good but not perfect. Reviews praise size, placement, and responsiveness, while some call them softer, just OK, or awkward for left-handed use.

Product 2: ASUS ROG Keris II Ace
4.1

Side button quality is mixed. Some reviewers loved their placement and crispness, while others found them small, stiff, high, heavy, or less accessible for larger hands.

skate durability
Product 1: Logitech G309 Lightspeed
3.0

Skate durability evidence is mixed and limited. One reviewer saw no scratches after weeks, while others criticize thin skates or lack of replacement options.

Product 2: ASUS ROG Keris II Ace
4.1

Skate durability is only moderately supported. One review points to replaceable feet if they wear out, and another describes the stock skates as standard PTFE rather than emphasizing long-term durability.

software stability
Product 1: Logitech G309 Lightspeed
4.0

Software stability evidence is limited but positive where stated. TechRadar says the software works in the mouse's favor.

Product 2: ASUS ROG Keris II Ace
2.9

Software stability is a weakness. Reviews describe Armoury Crate as bloated, resource-heavy, and unwieldy, even though some settings can be handled without keeping it open.

software usability
Product 1: Logitech G309 Lightspeed
4.0

Software usability is generally positive. G Hub is described as useful, simple, usable, well-rounded, and strong for profiles, DPI, and remapping.

Product 2: ASUS ROG Keris II Ace
3.6

Software usability is mixed. Some reviewers found configuration simple or the lighter Armoury Crate Gear easier, while others called the software slow, terrible, bloated, or in need of improvement.

surface compatibility
Product 1: Logitech G309 Lightspeed
3.5

Surface compatibility is mixed. One review praises use on different surfaces, while another recommends padded surfaces because the skates are thin.

Product 2: ASUS ROG Keris II Ace
4.7

Surface compatibility is very strong. Reviews describe calibration for surfaces, tracking on glass, and reliable tracking across many surfaces or mouse pads.

switch durability
Product 1: Logitech G309 Lightspeed
4.3

Switch durability evidence centers on optical and hybrid behavior. Reviewers report no double-click or creaking issues and describe optical-only mode as reducing mechanical-switch risks.

Product 2: ASUS ROG Keris II Ace
4.8

Switch durability is a clear strength. Multiple reviews cite the ROG Optical Micro Switches and their 100-million-click rating.

switch feel
Product 1: Logitech G309 Lightspeed
4.3

Switch feel is a strong positive. Reviews describe the switches as crisp, clicky, smooth, tactile, light, and satisfying.

Product 2: ASUS ROG Keris II Ace
4.0

Switch feel is divisive. Some reviewers praised crisp, consistent, punchy switches, while others described dull, mushy, hollow, or travel-heavy click feel.

value for money
Product 1: Logitech G309 Lightspeed
3.5

Value for money is the most divided area. Positive reviews praise price-to-performance, while critical reviews say it only makes sense with PowerPlay or lacks standout value.

Product 2: ASUS ROG Keris II Ace
3.7

Value is mixed because the performance is high but the price is premium. Several reviewers called it expensive or pricey, while others still found the package justified or worth the money.

weight
Product 1: Logitech G309 Lightspeed
3.6

Weight is highly dependent on setup. Around 86g with AA is viewed as acceptable by some and heavy by others, while 68g with PowerPlay is praised.

Product 2: ASUS ROG Keris II Ace
4.8

Weight is a standout strength. Reviewers repeatedly cite 54g or about 1.9 ounces and praise the control and low fatigue that come from the ultra-light build.

weight tuning
Product 1: Logitech G309 Lightspeed
4.2

Weight tuning is a major differentiator. Reviews repeatedly note dropping to about 68g through PowerPlay or reducing weight with battery changes or mods.

Product 2: ASUS ROG Keris II Ace
No score yet
wireless latency
Product 1: Logitech G309 Lightspeed
4.5

Wireless latency is generally strong. Reviews associate Lightspeed and dongle use with low latency, quick response, and no noticeable delay.

Product 2: ASUS ROG Keris II Ace
4.5

Wireless latency is strong in the 2.4GHz mode. Reviewers cite low-latency wireless, low measured wireless click latency, high-polling responsiveness, and no obvious latency problems.

wireless performance
Product 1: Logitech G309 Lightspeed
4.4

Wireless performance is one of the stronger areas, with reviewers citing reliable Lightspeed operation, no trouble in gaming, quick response, and stable connections.

Product 2: ASUS ROG Keris II Ace
4.7

Wireless performance is consistently strong. Reviewers report good wireless connectivity, no drop in tracking, no hiccups, no stutters, and no dropouts during use.