Thanks for the replies! Unfortunately I can't buy Condemned, and what I've read about CoC doesn't sound too good, apart from the great atmosphere ... it's not just the risk of bad performance, bugs and crashes, but also a savegame system I might not like that would force me to replay large sections, or confusing level design that uses questionable methods to guide you where it wants you to be (invincible opponents, randomly opening doors, required items of which you're never told that you need them that can easily get overlooked and become inaccessible at some point if you go on without them etc.). I guess I should focus on completing Bioshock first anyway, or give the System Shocks another try. :)
Maybe, but that's only sporadicly. IMHO it's on the same level as dismissing Bioshock for the Pipeline-Hacking metagame and not taking into account the rest of the game (BTW: I LOVED the pipeline hacking!).
But I surely admit, Condemned is not everybody's cup of tea. You have to work for it, esp. the melee. IF you are not willing to master that, you will have a hard time indeed.
Anyway, have fun with Bioshock and SystemShock! :)