I switched to Firefox a week or so ago for the same reasons. My issue is that I can't make Firefox usable for me without a bunch of tweaks. For example, scrolling with the mouse wheel feels like scrolling through mud. I like smooth scrolling but the defaults are too slow. Font rendering is also janky unless I disable hardware acceleration, which is a real shame. On Chrome, I do nothing but add a home button to the toolbar and I'm done. I still haven't found the magical combination of settings that makes Firefox feel natural.