ds totally, more variety of games online is good, loading doesn't take long and has most games of every genre. PSP is ok online long loading lots of games but most are all fighting and racing
PSP. With the DS the touch screen is nice but it is not very good for picking up on the small lines, where as with the PSP every time you hit a button weak or strong it picks it up.
Ds, because the touch screen ads the interactiveness that almost no other game system has but, the only bad thing is the screen gets scratched up really easily.
im goin for psp. better games, less kiddish, actually has goiod graphis. not saying the ds doesnt have any of these, just sayin that i like psp better.