Firefox Or Flock? Or Both?

With a release candidate of Firefox 3 upon us and the final version set to drop sometime in June, I'm finding myself a bit torn: Do I upgrade to FF3 once it's fully baked, or stay with my current browser?  What makes the dilemma all the tougher is that my current browser isn't Firefox 2 -- well, it is, sort of, but not really.  It's Flock, which serves as great proof of how open source can allow the creation of excellent derivative products.

Flock bills itself as "the social Web browser" -- a Web client built specifically for organizing and making sense of the plethora of social networking sites out there.  I thought I'd only make modest use of features like that, but one day with it and I switched.