Apple's Safari 3 is now available for public beta testing. I've only used it for 5 minutes and I'm already sold over IE7.
http://www.apple.com/safari/
One thing i do miss...in IE7 two clicks highlight the entire address bar. In Safari it takes 3.
edit: In IE7, leaving your cursor over the forum topic here put up a short summary of the thread. Safari has no such feature as of yet. :\