PS3 is first for me. It's above PC for me because: It's a dedicated system, it's easy to play and use, minimal setup. This applies to games and all other services. No driver updates, no hardware updates, no worrying about whether my system can play a game smoothly, no messing around with settings. Better exclusives.
Don't get me wrong, PC has many advantages over PS3 (and consoles in general) and I know a few of the things I listed as disadvantages may be seen as advantages to others (hardware updates or example). But personally, I'll take the super-easy setup and convenience and exclusives my PS3 gives me over the upgradability, mods and exclusives my PC gives me.
Play both a lot though, infact I'm off to play HL2 now.
Out of all platforms I've played this gen:
PS3>PC>360>Smartphones>DS>Wii
I imagine the VITA will be between phones and 360 once I get it.
