I think that the DS is way much better. First of all, it's price. Secondly if you have some old games from your SP or ADVANCE you can use them. The DS has a messenging system which is very useful, and one of my favorites, a touch pad. Some DS games even allow speach recognition to play the game. FUN FUN FUN!!! ON the other hand the PSP is not so good. Yes, it can play movies and can be used as an mp3 player, but it's heavy. The price is not worth it. This is one of the reasons why I do not like this. And when you buy the PSP you'll also have to start a new gaming category, buying and wasting money on games that you might have in your old SP or ADVANCE. These are some of the many reasons why I prefer to have a DS.