I've used Firefox since it's first releases when I found it on a monthly magazine free CD, haven't looked back since. I've watched Chrome grow since BETA and still don't like the browser, I'd find it tolerable if they could just implement Windows built-in font drawing. It can be faster, it's more user friendly - it's still not for me.
I'm one of the few Frontend guys in my circles that uses Firefox as my build browser for development, and come across the least cross-browser issues. Maybe that's just because I learnt IE's cravats over the years and if Gecko/Trident support something, you can be sure that Webkit does.