Decent model?

Hey, been thinking of getting a PSP for a while now. Always wanted one when I was a kid and now I have adult money lol
But been looking around and there's a lot of different models, and I have no idea where to start. Was wondering if anyone had any insight into what is like a decent model to get. Seen a few like the slim and lite and the E1000 and can't get my head around which is the best.