I don't use Firefox (Chrome here) but I'm definitely going to switch. It just seems much more speedy now which is good - probably because Chrome is all full of gunk thanks to all that browsing.
Plus what I also did was set Firefox to move the cache into RAM so that its much faster to load. Here's how: http://lifehacker.com/#!5687850/speed-up-firefox-by-moving-your-cache-to-ram-no-ram-disk-required
The rest of the year should be exciting for firefox. It plans to release version 7 by the end of this year. Hope it goes well and its not just fudging the numbers to make themselves look good, but rather actually deliver new features on time. For instance did you know that Firefox had the idea for tabs on top - Chrome got it out first but now finally Firefox has it.