http://www.opera.com/Falcon, never tried opera, hey post a link and I will take a look.
petros, I never gad a problem with large sites, could you give me a link that ie has trouble with?I actually prefer IE w/Maxthon, but it chokes on very LARGE pages for me, so I usually use Firefox since I visit huge. As far as features go, though, Maxthon has a crapload of useful built-in stuff and community addons that blows Firefox (even with community addons) out of the water.
Use IE7 if you hate pop ups... At least in IE7 you have the option to block ALL pop ups by tweaking the settings - you can't do this in FF.
I use FF for all the nice plugins.