I hope I'll never go back to IE. But that depends on the alternatives, don't it :-)
Hopefully, with a bit of luck, Mozilla will be fully handed over to the community if AOL give up on it. So development will slow down a bit on it, but it's better than nothing. Bear in mind that Firebird/Thunderbird are also probably owned by AOL.
Opera isn't quite to my taste in browsers :-)
With an extra bit of luck, particuarly important as the A1/OS4 is nigh, one of the browsers will have their socks pulled up, and I won't have to keep hoping that someone will start porting Mozilla to AmigaOS.
On the email side of things, I wonder if Qualcomm (Eudora) can be persuaded to port Eudora to AmigaOS4. It's quite a nice email package, though I've moved on (I might come back to it though).