Firefox has a lot of nice addons, Chrome is really fast and Opera feels complete.
You can only decide for yourself really since the biggest difference is interface, I just shoved that aside for addons in firefox (such as firebug, Web Developer, Greasemonkey, IETab, Scrapbook, Update scanner, Session Manager, Cookiesafe). And having used Firefox since for freaking ever I just find that switching browser would be to big a hassle for not enough gain.
Though I have considered Chrome, I actually really like the feel of it.
Yea, decide for yourself
