Is your XBOX noisy?
Mine seems really quiet - I think it has fan control in XBMC?
It's quiet anyway. Was playing on my modded XBOX tonight with my brother - in fact I play on the modded Xbox more than my PS3 because it has copious amounts of split screen multiplayer games on the hard drive. I'd love 1.5TB of storage!
The PS3 is all online only plus I currently only have two games for it.