Which Xbox should I get?

My son and I play a good bit of video games (him more than me lately). He has been asking for a Xbox 360 and my husband and I are talking about getting one. From your personal experience, which Xbox 360 would you recommend? My son is 8 (yes he is spoiled), and already has list of games he would like to get for it. There are several games I would also like, as well as a few Xbox games I wouldn’t mind picking up if we were to get the elite (since it is backwards compatible).

Thanks!