After reading many many reviews on other sites i thought id put my own on here:-
In a word, awesome. These headphones bring out so many sounds that you'd never hear through your standard TV or 5.1/7.1 surround sound setup at home. Theres something moving on ur left, you'll damn sure hear it on your left!
If you've read other reviews, you'll of read about a slight 'hissing' sound coming from them. Yes, there is. But i've only noticed it when im on the Xbox dashboard. Basically, if whatever your doing on the xbox360 does not produce a single note of sound, then there is the tiniest of hisses- which is to be expected, its impossible to wirelessly send silence.
Easy to set up, ive got my Xbox360, Ipod AND PS2 hooked up to it (there are a couple of red+white sound connectors on the back so why not?lol) and the sound is amazing. Alot smaller then i thought it would be as well.
If your not playing a game which is 7.1 ((so not Halo ODST of COD4MW2) as this is what these speakers are intended for) dont worry, it will still quite happily play at 5.1 and still sound amazing.
It may seem quite pricey, but if you love your gaming, hate people being asleep whilst your gaming, and hell, generally love music (i had these on whilst cleaning with the Ipod attatched) then buy them.