All the good games for Xbox are multiplat. Its waste buying it. PS3 can lose exclusives. It doesn't matter. Sony always gets the extra content. Only good exclusive I can think of for Xbox is Halo 3.. and um.. is it worth paying yearly for xbox live for 1 game?
I think not.
Plus I hate Halo, I thought it was boring.. and all my friends returned their games pretty quick, or just stopped playing.