I used Firefox for a long time until my little sis introduced me to Chrome. On my computer, Chrome is the fastest browser, even faster than Firefox. I also love how Chrome is owned by Google, so I can sync everything from it onto my Android phone.
However, I use Internet Explorer 9 for when I go onto the FH forum. For some reason, my Chrome doesn't like FH and won't let me log in. And on the rare occasion it lets me log in, it doesn't let me post.
But it's not so bad. IE 9 is a decent browser, it's just not as pretty and polished as Chrome.