@AMD

With all the details you've given me, I'd recommend the PS3 320GB Slim Model.

Why?
Its just a good a the Xbox 360 but it has the potential to be better for you in the future (Bluetooth, BluRay, 3D movies, 3D games, PS Move, TV recorder, Internet browse, free PSN) and its priced the same.

However, I would only recommend the Xbox 360 only if you are underage/poor and can borrow the games from your friends. Or if you are rich and online gaming is important to you.

I would make sure both the PS3 / Xbox are in a ventilated area so they both over-heat and explode. Neither have problems like the Red Ring or Yellow Light because of better QC in manufacturing.