Xbox 360 bundle What to Look for.

I know that I should aim at $100 or less for a more or less barebones Xbox package, since Gamestop is selling a bundle with five games at that price. I'm currently eyeing a few local deals at $80 a system with a few games, but they are whites (meaning I should ask if they are post October 2008 units).

One bundle has a Forza 3 game, and I am wondering if I should go for this console or wait for a Cowboom deal on a Slim with bigger hard drive and get Forza 4/Horizon instead.

Any tips and suggesions? As you can see from my signature, I am a moderate PS3 gamer but don't have Gran Turismo.

I'm interested as well.  Never thought I'd buy a 360, but I want to play Jet Set Radio Future so badly that it's come to that.