I need a new Web Browser....now

Sorry folks, this thread is unrelated to many of the threads around, but I am really upset at my current browser and I would like some suggested alternatives. Reasons and opinions are strongly encouraged. I have been with AOL for over six years and the spam, crashes and total inability to open upwards of half the downloads sent to me are highly frustrating. There is a very up-to-date PC in my office and I could always go there to get whatever AOL could not handle. Tonight, I tried to log onto EXPEDIA to buy some airline tickets and my browser is not supported. Travelocity had the same error message. I really don't know what is going on, I just want it to stop. I am working from a Macintosh Computer running 8.6 and I have another Apple in my upstairs in my personal office that has version 9.04. AOL fully (seems?) to support the new I-mac but only throws crumbs to us older users. The only reason that I have resisted changing is because most of my best friends use AOL and I like the Instant Message feature. But, considering the rest of the frustrations, I can do without!

Who do you use? Why? Who did you use and why did you change and was this change for the better? I hear Yahoo! is back on the rise and several people I know simply use hotmail.

I am going to change. Please, any suggestions are highly appreciated! Needless to say, this is not some fishing expedition intended to count posts from other A'gon members.