I was under the impression that Bioshock 2 was good, if you want more Bioshock 1. I enjoyed 1, played it until Achievement completion, but I also felt like I had enough of it, since it felt a lot, a lot, A LOT like playing System Shock 2 again.
This one looks like you'll have some beautiful scenery (one of the screenshots is my current desktop), some interesting rapid traversal in lieu of hallways, a a hot, corseted chick with a pageboy haircut who desperately needs your help. Ken Levine and his damned ego grate on me, but I see no other choice but to consider this a day one purchase.