Can't speak to M, but I've got a board with stock Clears and an F, and I haven't used my Clears since I got my F.
I use my ergo Clears at work stI'll, but if you want BS, a Model F is the way to go.
And remember, OP is talking Unicomp Model M, so it's not a great example of a Model M.
ALPS are for typing. Cherry are for gaming and doorbells.
If you're a typist, you should be looking at ALPS and Buckling Spring.
Entirely subjective claim contingent upon taste. Yes, gaming isn't recommended on BS due to rollover issues, but Topre, MX, Alps, etc for typing and gaming all depends on taste. For example, I can't stand MX Red, MX Browns, Realforce Topre, or modern Alps, but others swear by those.