Between this site and r/MechanicalKeyboards, I picked up so much helpful information on my quest to find (or mod) the lightest switches possible.
I wrote up my research (link below) and wanted to share it for other people going down the same path.
The summary is this:
For my particular RSI (and something others may want to consider), it's not just about spring weight, but also key travel. My quest was to find the best combo of light press and short travel.
* For MX style switches, I had the best results with kailh speed silver with a 35g spring (25g actuation) and o-rings.
* The switch combo I wanted to love even more was gateron clear with 30g spring (20g actuation) and o-rings.
The kailh speed silver would not properly reset with 30g springs when I tried, and the 35g spring that is strong enough to reset the switch is just a bit too heavy for my hands over time.
But, for my particular RSI symptoms, the longer actuation distance (2.2mm) on the gateron clears with 30g springs leads to even more irritation than using the 35g springs with the kailh speed silvers.
So... I kept looking.
So far I have had the best experience with kailh chocs with 12g springs. There is a quality to these switches that gives them *just the right amount of snap* before the key starts to move. I wouldn't describe it anywhere near a brown switch, but you can actually brush your fingers lightly over the keys without accidental keypresses.
Where I want to go from here:
I just found out about gateron optical yellow switches that actuate at 1.1mm . I hope to try those in combination with even lighter springs. The 4.0mm travel of the switch may still present the same RSI irritation issue as the gateron clears. But I just read about the trampoline mod. That may be the perfect combo.
Further down the rabbit hole...
The full article is here on medium (this is not a paywall article)
https://medium.com/@alexjacobs/how-to-set-up-a-mechanical-keyboard-with-super-light-touch-switches-not-paywall-58ecf2702311