First generation nano, they use one of the best DACs apple ever utilized in their ipod products, so basically best sound quality.
If I found one in the street or subway Id prolly "iJACK" it... Also Apple could put an "I" in front of anything and you clowns would wait in line for it.
Or get the player from Archos with a bigger screen, wifi, DVR, No Itunes mumbo jumbo, and is cheaper...
I'm gonna hafta go with the rest here and say pink. If they have bunnies and hearts with it, even better.
black and silver are too easy to lose. blue and pink are flaming. green and red are pimp. red being the pimpest.