I still haven't decided which one to get - NDS or PSP.
PSP has a few advantages - better gfx, bigger screen, video and mp3 playback.
Correct me if I'm wrong, the M3 Adapter basically makes it almost like a PSP? It can play video and mp3s on your DS?
If that's the case, I'm sold in getting a DS! :)
And doing a bit of researching, the M3 has emulators installed already? How are they compared the the other homebrew emus? Does the M3 emus have have high percentage compatibility?