Nintendo DS, PSP, iPod Touch, or Zune HD?

Which would you choose? I know the iPod is a portable media player, and so is the Zune. But Apple is marketing the iTouch as a game machine, and the Zune is from Microsoft, and in an interview Microsoft said that they could become big in the handheld gaming space. So yeah. But me, I would hold off on buying a Zune until a better model comes out (more capacity, internal speakers, and more apps). So I would choose the DS. What about you?

DS for me.

For gaming, PSP.
For casual gaming, DS.
For novelties but the occasional gem, IPOD TOUCH.


I rank them :

1.PSP (winner!! lol)
2.DS & IPOD TOUCH

I'd say gaming-wise ds and ipod touch are on-par because ipod touch has loads of games but a lot are just shovelware. The best games on ipod touch easily surpass the best on ds but still, the overall library of ipod touch isn't the best so...
IP/IPT & DS/DSI are =

PSP owns because it's just got the best handheld games ever seen and they easily match the console counterpart.

Littlebigplanet
Grand Theft Auto franchise
Monster Hunter franchise
Socom franchise
Resistance Retribution
Syphon Filter franchise
Medal Of Honor franchise
Metal Gear Solid franchise
Silent Hill franchise
Killzone Liberation
Gran Turismo
Motorstorm
Soul Calibur
Ratchet & Clank
Tekken franchise
Jak N Daxter franchise


and so on...