With the 25g I can only rest about half the weight of my fingers on the keys without triggering something, but with the 35g I can rest the full weight comfortably. If I’m practicing a lot then I do notice my fingers get sore after a couple of hours on the 35g, but for normal use it’s probably fine.

I use 25g light blue, which I think is perfect. If you’re experimenting, the heaviest I’d try is 35g pro red.