This Mozillazine article
talks about the success of the "1000 Firefox reviews"
on Download.com. Apparently people like it. Over 89% gave it 5's across the board. While I don't think it is 100% perfect (I'd put it in the mid 90s), IMO it definitely beats everything else in the Features, Ease of Use, Stability, and Speed categories that Download.com uses. If you're interested in switching, there's a whole site dedicated to helping you with the transition