"Ya, DS has a touch screen and a normal screen, but PSP can play music, movies, games, and now, even INTERNET!"
Support for UMD movies is steadily declining. <<
I've played both, but I own a DS. The PSP has a superior screen, it's beautiful, clear, crisp, birhgt, it's perfect. The graphics are better too. But other than that...
I don't care if it can play music or movies. I have an iPod and DVDs are better. Plus if you're trying to compare it to the DS, you have to compare it on the game front alone. The PSP has yet to have title that's impressed me (then again...there's few PS and PS2 titles that I want. I can count them on one hand - both systems combined- and yet my Nintendo library is in the hundreds). I already have lots of DS games.
I hate the PSP's control stick, it just...it's weird. It doesn't move properly, it's like a nub that slides around on a flat surface.