Personally, I prefer the PSP, but only slightly over the DS. If your a traveler, and like to have many forms of entertainment, go with the PSP hand down. But if your more into the thinking and new-style games, I say go with the DS. I own a PSP myself, which is probably why I picked that, but I will admit that Tekken can get boring after a little while... However, I only payed 100 dollars for a 4gig memory card, and I have 3 movies, 100+ songs, and 145 photos on it, along with a few games I have on my computer downloaded. With Final Fantasy coming out, along with many more shooter-ups (my favorites :D ), the PSP is hands down better. But if you don't use the PSP to your full advantage, it sucks, plain and simple.