The speed improvements are noticeable pretty much immediately.
While I like the interface better, on the Mac the tabs are not nearly as efficient as Chrome's and, after using Chrome for about a year, I really like the combined address and search bar. It's just better one basically all counts.
That said, I use Firefox for development primarily. Firebug is just plain awesome. (And, it's nice to have another browser around that I can have in private mode constantly so I know I have a clean development environment.)
While I like the interface better, on the Mac the tabs are not nearly as efficient as Chrome's and, after using Chrome for about a year, I really like the combined address and search bar. It's just better one basically all counts.
That said, I use Firefox for development primarily. Firebug is just plain awesome. (And, it's nice to have another browser around that I can have in private mode constantly so I know I have a clean development environment.)