I tried Opera 9 just the other day. I thought it sounded good. Turns out, I still like FF better. Opera didn't run some flash sites as well as FF.
Speaking of which, does anyone ever have any flash problems with FF? Sometimes they seem like they are out of sync or something on FF. Take Kubota's website for instance. When I use the flash version and look at one of their tractors, the flash doesn't line up with my mouse. Maybe those with FF could try it. I think this only started when FF 1.5 came out. Does the site work for you guys running FF? Be sure to use the flash version of the site.
http://www.kubota.com
Another thing with FF, I have Quicktime installed, yet when I go to sites that use it, I still get the message that I need to download it. Why does that happen?
I just completely reinstalled FF again. I delete the FF folder in Program Files, so maybe that will help it to run better. I'm gonna keep my fingers crossed.