i waited till only a few months ago to get my first ps2 that's just because i'm ludicrously cheap and refused to buy one until my friend sold me his old one for $20. alternatively when and if i do get one of these newer systems i'll probably be getting a wii because it's just plain more interesting. the other two are just the same thing as their predecessors only they've got more horsepower now. the only reason i'll get a ps3 is for the new mgs game. there's not a lot else on that console that interests me.
anyways, an aliens fps would be pretty cool but didn't we kinda already have that with the avp games? i don't see how playing as an alien or a space marine could be much more than that although i'm sure the game will look and sound awesome i don't have much hope for the gameplay.