Firefox has worked great for me for years now. I switched back when IE didn't have tabs (does it now? I assume it must) and haven't used IE since except when a) installing a new OS and having to get to the firefox website, and b) random occasions in the past where a banking website, etc would only allow IE, which doesn't really happen anymore.
Also, I am an IT contractor... so once in a while I have to use IE when a client doesn't have FF installed.
Hmm..i think you are secretly me. We must be the same person...