For me it s the DS which has nothing interesting the PSP does not.
The only game i would buy on DS would be ma-jan taikai but with the higher resolution the game is far more lisible on PSP. Next month i ll be playing Tales of Eternia, Bleach, Mercury and Untold Legends. That with the current Ridge Racers, Metal Gear Acid, kotoba no puzzle mojipittan, lumines, minna no golf, vampire chronicles chaos tour the system satisfies me in term of games fully
i never had so many games for a system 3 months after the purchase before.
I ll get a ds when interesting games for me in the works get released, not before.
If i were a 3D platformers fan then i would have it since M64 is a piece of history, but i finished it once on N64 with i think all the stars (i remember a canon and seeing yoshi on the top of the castle but that s far) and the last thing i would do in the next 12 years is playing it again. I could replay super mario world anyday but not this one, i found the controls awfull for a platformer at that time and still do (i am not an analogic one)