PS3 all the way.
Yes, it means I can't play ME1 and import the save, but since the PS3 version kindly comes with a save file generator, it's never been a problem.
The only thing I miss are a few of the very small little details. And, having played ME1 on PC (after ME2 on the PS3, to get the backstory) those details don't seem that worth worrying about.