FWIW I like...
And use IE for Microsoft updates only. Been using Mozilla l.7.3 for a while and recently installed Firefox 1.0PR. I really like Firefox for speed and lack of annoyances. After tweaking cookies to my liking the software seems very nice. I note that the final non-preview release is expected next month.
I suggest at least trying it... right now I have three browser. Will always keep IE for updates and either Mozilla or Firefox depending on future experience.
So try them and see what you like. Best of luck!