Between the K2 Max and MX Keys S, the K2 Max comes out ahead in hot-swappable, while the MX Keys S wins on size. Overall, the K2 Max scores 44.3 and the MX Keys S scores 44.3 on our Mars Score.
Which should you buy?
These two are evenly matched on the broad strokes, with the decision sitting on which individual spec advantages weigh more for your use.
Pick the K2 Max if you care most about hot-swappable. The biggest gaps in its favor are hot-swappable.
Pick the MX Keys S if you care most about size. Its strongest claims are size.
Both ship with comparable wireless, polling rate, rotary knob, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Keychron - K2 Max wins
- ▲Has Hot-swappable.
Why Logitech - MX Keys S wins
- ▲Size: Full (vs 75%).
Spec comparison
Switches
| Spec | Keychron - K2 Max | Logitech - MX Keys S |
|---|---|---|
| Switch type | Gateron G Pro | Scissor |
| Hot-swappable | truelead | false |
Layout & Build
| Spec | Keychron - K2 Max | Logitech - MX Keys S |
|---|---|---|
| Size | 75% | Fulllead |
| RGB | truelead | false |
| Rotary knob | false | false |
| Case material | Plastic | Plastic |
Connectivity
| Spec | Keychron - K2 Max | Logitech - MX Keys S |
|---|---|---|
| Wireless | true | true |
| 2.4 GHz | truelead | false |
| Battery | 100 h | 240 hlead |
| Polling rate | 1000 Hz | 1000 Hz |
Frequently asked
Spec-level deep dives
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