Played for 14 straight hours yesterday, 4pm-6am. No freezes (360).
Just about the ONLY complaint I have is the vehicle handling is still too arcadey. Cars have no weight, go from zero-to-full speed in 2 seconds, and hug the road like elite race cars.
Everything else is just wonderful, though. In that 14 hours yesterday (which was probably 11-12 hours of actual play time), I did, I dunno, 4 or 5 plot missions. There is so much else to do it's crazy.
I'm gonna put this in caps and bold since it's so important:
When you get the game, immediately go to the graphics menu and TURN ON V-SYNC.
The framerate is vastly improved in SR2, and I haven't noticed any penalties for turning the v-sync on. The framerate in SR1 would be a damn slideshow at times, particularly when there were a lot of light sources going on (night time + helicopter spotlight + burning car = slideshow). I haven't noticed any major dips in framerate in SR2 so far, with or without v-sync.
Just as I was about to wrap up my marathon session last night, I found the Fuzz activity. Oh my god!
I don't want to spoil anything, just... go do it.
I looooove how the NPCs are different depending on where you are on the map. Lots of hot goth chicks hanging around the university campus!
Very funny commentary if you stand around and listen to them, too, but that really goes for all the NPCs.
I'm rambling 'cuz there's so much to talk about. I'll just shut up, and go play some more.