No, I'm not brainwashed with open-source stuff (
I'm currently dual-booting, and currently using XP more than Linux), I just said that I rather use open-source apps (
as long as they're better of course). And yes, Firefox is way more powerful than Opera, and has much more potential just because it has a huge community behind it and is open-source, just like foobar2000 for example.
The extensions I'm currently running are:
AdBlock Plus
ChromeEdit Plus
Compact Menu
Cooliris Previews
Customize Google
Download Statusbar
del.icio.us
FasterFox
Firefox Extension Backup Extension
FireFTP
Fission
Flashblock
FlashGot
Gmail Notifier
GreaseMonkey
Mouse Gestures
Searchbar Autosizer
Stylish
StumbleUpon
Tab Mix Plus
Video Downloader
Wizz RSS News Reader
I'm not saying that Opera is utter crap, Firefox happens to be simply more powerful, and has to ability to enhance my browsing experience much more than Opera. The latter is only a good alternative if you're suffering from memory problems, or if you just happen to be a performance freak.