A freind of mine got me to switch from IE6 to Firefox by telling me some really cool tweaks. However, after about 2 weeks it began resetting to it's defaults and was slower than IE. So I tried Opera and still use it. It's as fast as Firefoz was when tweaked.
FUCK IE7! I use WMP for my music, and in order to backup licenses for my music IE has to be the default browser. I just reformatted and hadn't reloaded my tunes when my update program auto-installed IE7. Now my licenses won't back up and I can only listen to about 20 percent of my music! Even the drumtracks I recorded myself won't play cuz IE pops up wanting a license. I'm still fuckin with it, but IE6 never did this to me.