Animal Crossing all over again, only this time, portable.
Gameplay: Clunky controls for the DS, better keep playing Animal Crossing for the Gamecube.
Graphics: Same as on the gamecube, so no difference whatsoever.
Sound: The sounds are the same on the DS as on the Gamecube.
All in all, buying this, you aren't missing anything from the gamecube, so why waste money on the portable version when you can just play it on the gamecube?