i have a ps3. i enjoy the games i have on the ps3. my only complaint is the online setup.
it's not that PSN sucks, or doesn't do what i want from the online network. It's that the PSN community sucks at shooters. I can pick up pretty much any shooter, having never played it before, and within a very short time have a 2:1 kdr. Not because I'm some amazing FPS player, but because 95% of the community sucks at shooters.
This typically leads to the online version of games dieing very quickly. Because most of the people who bought the game suck at it, and quickly stop playing. After all, what fun is there in playing a game where you get your ass kicked nonstop? (the CoD series is the exception, but thats a shitty shooter so who cares)
So i kind of wish I had an xbox... it sounds like online fps's thrive over there compared to PS3.
Now that blu-ray players are so cheap, it's hard to use that as a justification of the PS3... really comes down to what kind of games you want to play, online vs single player, and if you're attached to any console-specific series or not...