xbox360 bro portable will suck nuts compard to console but if u travel alot and arent at home buy the portable if u get xbox306 only buy if u can get xbox live
I wouldn't bother with either. The Xbox is horrible and loud, and a decent computer can kick the crap out of a toy like the Xbox 360. I would get computer parts: graphics card upgrade, etc.
However, the latter does not exist . . . yet, according to the internet, there's thought about it. However, I hated the Xbox 360 for it's clunky lag, and slowness, so I would not advice getting such a slow machine that's portable.
If PC parts are out of the question . . . *sigh* Xbox 360.