Definatly 3DS, much better line up, and although it has lower tech to the NGP's, it's still quite impressive. It also has backwards compatibility, which is great considering I don't own a DS.
On the NGP, very impressive tech, but honestly not that great of a library so far, plus it'll probably be quite expensive.
I terms of innovation, both of these have nothing really. People brag the 3D without glasses is revolutionary (which everyone but games hounralists are eyt to judge), but i know i'll be turning it off. NGP has the before mentioned tech, but despite all those claims of "sony is so inovative OMG" are stopped cold since all the games announced are from established IP's. Wipeout, uncharted, MGS4? Yeah, totally new games there. Same applies for 3DS, but i'm just saynig this because most people claim that the 3DS is "fresh-less"