I agree with everything Lintasare said, and would stress that, only if you enjoy gaming, think about buying a PS3. The Blu-Ray player in it is very nice and you are getting an entire entertainment system along for the ride. Prices have recently been dropped on the PS3, as well.
As far as the players, just stay with a brand name you've heard of. Most of the components are made by the same companies anyway.
Most electronics are a lot like car buying. You may have a particular brand to which you're partial, but there are gems and lemons sprinkled into all makers.