Recently, I've preordered myself a PS3 game. Now I think it's a good time for me to purchase a PS3 to play it on! Now, I was going to go with what I assumed to be a normal setup, but then I was told about a sale on a "Slim" version, which seemed like a good deal. But I imagine that in being Slim, it has some corners cut, so there's going to be differences.
What are the actual differences between the different versions of the PS3? And how many are there, anyway?