I remember walking into a shop (Game) and I saw a 3DS available to be played. I was excited because I really wanted to see the 3D on it.
So, I held it in my hands, and the game was that new Street Fighter (couldn't care for the name) and I watched it load as I set up my character and the beginning of the fight. I flicked the 3D switch up and... disappointment. Although the graphics are amazing, the 3D is not quite so. Maybe I didn't play it for long enough, I don't know. All I know is that it was ick.
The Wii U looks very, very nice. :D