Buying the PSP Slim mainly for it's AV out option I was surprised that it did more then what I expected/wanted it to do. Combined with the right products you could turn the PSP into a media center and entertainment system.
The only qualm I have with the PSP Slim is that it smudges more easier then the original PSP2000 did. Besides that point it's positives far outweigh the only negative I have with it. If you're looking for a device that can keep you entertained by playing games, movies, videos, take/view pictures, browse the internet and even listen to music all in one, then the PSP Slim is for you.