First of all that $200 system is a ripoff because you have to spend $100 for the hardrive to get any mileage out of it. Those dinky memory cards suck. It doesn't come with a hard drive. Also, think about the games you like the play. 90% of the 360 library is games about big guys with guns trying shoot everything that moves. Also don't forget that A) the system has a 30% total failure rate (I've had the RRoD twice) and B) you have to pay $50/year for something you can do for free everywhere else.
Just consider those factors first.

Maybe you're right. I think I should wait a while and see what happens.

Wait a while? That will not work. Just decide if getting it or getting some other console. But first of all, what kind of games are you looking for?

I don't really know. I just want the obvious Xbox games. Halo3 ect..