I'll go with the PSP. Though I don't own one, it really has the games that interest me. I think there are also a lot more good new titles for it than many realize (I think too many people simply ignore the majority of news and reviews relating to the system). I use my mom's DS mainly to play GBA games. Frankly the DS library doesn't overly impress me, and contrary to what many seem to believe, I don't see that the touch screen has matured into a usefulness beyond controlling minigames and such. Even games like Pheonix Wright which seem largely designed with the touch screen in mind I find easier and more comfortable to control traditionally the majority of the time. Nintendo seems intent on creating new control methods that are either unecessary, or that even they seem largely incapable of using in new and truly creative ways. The DS kind of just makes me long for the old days of the Gameboy. The is just too much of a casual game market for me.