From a purely ergonomic perspective, neither MX keys nor low-profile keys are universally “better”—it depends on specific factors. Here’s the breakdown and parameters to consider:
MX Keys (Standard Profile)
- Pros: Greater key travel (3.5-4mm) allows full finger extension, reducing strain for some; wider switch variety (e.g., tactile, linear) matches individual comfort; taller profile supports wrist rest use, aligning hands naturally.
- Cons: Higher actuation force and travel can fatigue fingers over long sessions; taller keys may increase reach effort on split layouts.
Low-Profile Keys
- Pros: Shorter travel (2-3mm) minimizes finger movement, reducing strain for fast typists; lower height aligns wrists flatter without rests, suiting some postures; less reach effort on compact splits.
- Cons: Reduced travel can feel cramped, causing discomfort for users needing tactile feedback; fewer switch options limit customization.
Key Parameters for Decision
- Key Travel Distance: MX (3.5-4mm) vs. low-profile (2-3mm)—longer travel aids muscle relaxation for some, shorter suits others.
- Actuation Force: MX ranges 35-80g, low-profile often 35-50g—lighter forces reduce fatigue but may lack feedback.
- Typing Posture: Low-profile suits flat wrist positions; MX benefits elevated or tented setups.
- Finger Length/Strength: Longer fingers may prefer MX depth; shorter or weaker fingers favor low-profile ease.
- Switch Feedback: MX offers more tactile/clicky options; low-profile leans linear, affecting strain perception.
- Desk Setup: MX often needs wrist rests for optimal angle; low-profile works standalone.
- Typing Speed: Low-profile aids quick, shallow presses; MX supports deliberate, full strokes.
Conclusion
MX keys may edge out ergonomically for users valuing feedback and travel, especially on tented splits like ErgoDox. Low-profile keys excel for minimal movement and flat typing, as on Corne LP. Personal anatomy and habits dictate the winner—test both if possible.
MacBook Keyboard
| Keyboard Type | Key Travel Distance | Years Used |
|---|---|---|
| Scissor (Pre-2016) | 1.3-1.5mm | Before 2016 |
| Butterfly | 0.5-0.7mm | 2016-2019 |
| Magic Keyboard (Scissor) | 1mm | 2019-Present |