Just want to add feedback that i came across a Wii U station this morning on the mall when i was buying something for lunch and it had demos for all the most visible games the Wii U has so far.
I only managed to play Sonic Lost World and Mario 3D world cause i was beeing pressured... but i was really amazed. Both games look and play incredible. I thought it would be difficult to get used to the gamepad, but within a couple of minutes i was feeling completely natural with it. I think at this point its a certainty that i will get a Wii U with Sonic lost world (despite the criticisms, i think the Wii U version is worth playing).
Next time i go by i will want to try some more. Wonderful 101 and MH3U were staring back at me.