I have been splitting time between my Wii U and my PC, which can handle anything out there in the current gen. I'd say though that 70% of the time has been devoted to the Wii U. It's a neat little system that really only fucked itself with a weird accessory (the gamepad). The third party stuff is nothing new, so whatever. But the gamepad (which I like, but not for the reasons that they want me to -- I like it because you can play Wii U games on it and they look pretty great for such a small screen....although I dislike when touchscreen functionality is shoehorned into games) is just kind of a mess. Similar to Kinect, honestly. It's got some neat features, but no one wants to develop for it.
Anyway, all that being said: do you like Nintendo games? I've beaten Super Mario 3D World and Donkey Kong Country Tropical Freeze, and both are amazing. If you like a sidescrolling Mario, New Super Mario Bros. U is right up your alley. Wind Waker I'm on my first playthrough ever, but I find it to be incredible almost across the board. Even the weird Wonderful 101 seems pretty cool, if you can get past the clunky "look up, look down" nature of its use of the gamepad. I'm super excited for Bayonetta 2, but I'm pretty sure I'm the only one outside of a few weirdos from NeoGaf.
Other than that though, there isn't likely to be much there for you. The third party stuff is, in my understanding (I haven't played any third party games on the Wii U) uniformly better everywhere else. So, yeah, I guess we're back to, do you like Nintendo games?
PS - been playing Mario Kart 8 for about an hour and a half today and it is pretty much everything the hype has said it was, thus far.