I use FF and Chrome and if I absolutely have to, I will use IE, though like many of you, I HATE it.
I'm Legally blind and I like the clean aspect of Chrome and it's ability to not crash, also it increases font size so easily! I love that it does not make the screen wider (add a scroll bar on the bottom) I also love the inline spell checker, i find it is more intuitive than IE or FF.. Chrome is also easy to adjust the fonts ( I use Tahoma 16pt ) and I am just blown away by its speed.
I have used FF since the day it first came out in beta, I'm an old Netscape user as well, and in a few ways miss it a lot.
FF has been my main choice for so many reasons it would take too much space to say it all here.I just love it, espicially how you can install themes and make the buttons bigger. It also works well with my screenreader.(Jaws 8)