Yeah, still an expensive system.
No system has a million features, at least not yet.
The DS obviously has a few things over the PSP; sales, longevity (it was out before the PSP), two screens, more popular games, touch screen, microphone, durability, longer battery life, and less deaths(I have 3 friends whose PSP's shut down one day and never worked again). I'm sure there's even more that I didn't mention.
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