I'm set to buy one... may take me a while because I see it being rather expensive, but yup.
I think the graphics will be between NDS and PSP, probably slightly under PSP. I'm surprised that so many people think the graphics are close to the Wii - from the screenshots I've seen, they don't look much like Wii graphics at all. I mean a screenshot is a screenshot, any screenshot looks meh, but when I was watching the gameplay video for Kid Icarus: Uprising, I didn't even notice the difference other than the lack of 'weird' trees etc (I can't remember the right name, but like on MKDS, when you hold an item and it looks 2D compared to the 3D character models etc). Just watched it again and I can see the difference clearly, but bah, it's nothing majorly impressive. Still looks under PSP to me.
I'll most likely play action games on there so I'm hyped for Saints Row LOL.