i played the first one all the way through....idk....I didn't really like it. I just don't like games like that where you walk around a lot exploring and getting jumped at by the bad guys. The game was really cool, but I just don't enjoy that type of gameplay. I like COD style much better with constant action and less exploring and BS-ing around.
Also I found that in Bioshock #1 i was always out of ammo from fighting the Big Daddies and I would just die over and over since I had no ammo. That got old fast.
I would imagine the new one will be pretty cool....if somebody gave it to me for free I'd absolutely play it but I just can't justify spending $60.00 on it ya know? Since I'm broke currently, it really has to be awesome in my mind to spend that money. Thus far, only COD MW 2 is in that category.