IDK, I've played PSP, but never owned. DS is a dissapointment to me. I feel like you need 3 hands to "roperly" use it. I guess I would say PSP, but again IDK
What kind of a question is this it will always be PSP. DS's are stupid SCRIBBLE thats all you do and it gets really boring, and another thing is that this has been done so any times before!!!
there was all rdy a thread about this not that long ago ethier way im gunna say psp for the fact it has grand theft auto,kingdom hearts and other awesome games