yeah I guess if you have an ipod, you don't need a psp, sometimes it's nice just to have everything in one item, instead of carry'n around a bunch of stuff.
My psp was only $210, and most games are only 20 bucks. I'm sure LocoRoco is just as much fun as any DS game.
I'm pushing hard for the psp, but i've never played DS.....so maybe just get the DS. Also I don't think you can MOD the new psp's as easily as the old ones. And again, the browser is shit. Dammit, now i'm pushing the DS.