Interesting! Is there a good, ergonomic mouse that completes with Logitech's MX? I did hear they wear off quickly, which is why I never bought one, but I also never bothered to check for alternatives since everyone said MX is best by far.

I personally don't enjoy most ergonomic mice, almost entirely because of the weight.

I used to be the type of person that liked mice with >3 side buttons and programmable firmware and all that, with a shape that fit my hand, but lately I'm of the mindset that anything that can be done with a keyboard (or voice) should just be done on the keyboard.

I enjoy lightweight gaming-focused mice. Just anything cheap and light, and on the go, I just use my trackpad. Absolutely no reason to spend 90 bucks on a mouse unless you do most of your work on a mouse.