As most of you know, I bought a PS3 slim. Here's somewhat of a small review
Pros:
-Great deal ($299 for a blu ray, 120 gigs, game playing monster)
-Slimmer (much smaller than orginial)
-Keeps same aspect of orginial PS3
Cons:
-Games freeze after 40-60 minutes of playing
This sucks. Uncharted and Midnight Club always freeze after 40-60 minutes playing. I'm not the only one, as IGN has stated Sony is trying to find the problem. Usually happens when I'm in a good part of the game.
-Long load times.
I don't know about the old PS3, but it seems games load times and PSN load times take forever.
Overall:
It's a great deal and if you can overcome the freezing games, you'll love it. Unless you have a 360, there is really no need for a PS3 unless you want the exclusives (Uncharted 2)