For speed i am with FireFox all the way, but i like IE 7 the most it has some nifty advantages that FireFox does not have
i do not think you guys would understand if i told it so i wont bother.
Ps. For people here that did not know it, FireFox in 2006 for 216 days was more insecure then IE so do not come here saying "its way more secure" since its not, do not trust what other people post on the sites and try not to reply to my post like "L0L LM40 Y00 KN0W N0TH1NG Y00 SUX 1 4M KL3V3R!"
i do not know the status of FireFox on 2007 so i cant tell you more, but as i said FireFox is much better when it goes onto speed IE loses miserably. (Altho when you have a good internet provider thats another story ;D)