Its 7 foot from your tv then about 4 feet either side And you cant have ANYTHING in the area of play. Due to get some of these in at work soon. cant say that they are totally impressive. the 'casual' gamer that these are marketed for dont have the space to have one unless they wish to have an empty room with just their xbox set up.
PS3 and Wii would be easier but they are near enough the same thing the Move is more Ergonomic, maybe its me but the Wii-Remote just seems a tad more responsive. To be fair ive only tested like 2 games that require move.
in my opinion it's overpriced, and there aren't many good games which utilise it yet so i don't see much point in getting it as blac ops is keeping my hooked atm
Theres only some developing Kinect at the moment. If they are its probly alpha stages. Id hold out on Kinect until it drops or buy it as a bundle with the new slimline xbox if you dont have it already.