Kids these days...

I'm not paying for another similar console.
If I could swap my 360 and 100 bucks for a 720, I would.

Dirt 2 you say?

I have PGR 4 already. It's kind of similar.

8.3/10. XboX Live ain't free and installing makes games slower, and at the same time you have to use the disk.

I'm not sure, considering it's only an upgrade and I'll have twice the same game, just with a few more options.

I prefer Prototype, but some people told me it's not that good.

I'm not sure, but when I installed Halo 3 it went supremely slow so I just deleted it.

If I have a choice of these games, which one should I get (XBOX 360)?

Halo 3 ODST ( I have Halo 3)
Prototype
Dirt 2
CoD WaW

If you're super paranoid about your disks and don't mind slow games, install.
Otherwise, don't.

I was told PS3s get ruined after a year or so. I myself prefer getting an Xbox 360.