IE7 seems more of a nuisance than a help. It's not even much of an upgrade from 6.x. My mother and some of my sisters have it installed, and there's been more than one time they'd ask me something like "Why does it do this stupid thing?" and basically the answer was "IE7 is installed"...
Mind you, nothing major, just a nuisance. Stick with 6.x if you can.