Kantor on 28 November 2008
BioShock. I have yet to buy the other two, but BioShock is one of the finest games I have ever played. It's behind MGS4 and God of War as my third favourite game of all time.
Valkyria would be my second choice. Dead Space doesn't look in the same league.
EDIT: That's another thing. BioShock has trophies, VC does not. BioShock also has DLC (which comes with EXTRA trophies) so you'll be playing for a LONG time.
Dead Space has trophies, but again, from what I've seen, it doesn't touch BioShock in quality, and VC is a lot better.
And yes, they all have demos. But just so you know, the retail BioShock is far more impressive than that demo.
(Former) Lead Moderator and (Eternal) VGC Detective 
