[kmm]

I remapped Caps Lock to Escape too and it interestingly one of the best hacks I ever did. On my keyboard at least, Esc is far away from the home row, and the smallest button on my keyboard (1x1.6 cm^2). Caps Lock is the fourth largest button (1.8x3.2 cm^2) and is only a small distance to the left. I can easily reach Ctrl with my pinky, but not Esc.

It's also useful outside of Vim, in almost any application Esc means "Cancel the current operation". The only disadvantage I see is that I'm constantly toggling Caps Lock on other PC's.