I'm starting to open up to the concept of the Wii U after playing PS4 games on my Vita. Problem is that most of the games it does have are derivative of a lot of stuff that appeared on the Wii. I'm not a Mario fan either. They really need to get a good, original Zelda adventure on there and open up the chest to other franchises that haven't been touched in a while. A modern Star Fox game in HD would be fantastic.
I have a Wii U and I think there is a few ways to look at things when it comes to consoles.
1) The console has to be
fun. If the PS4 and XB1's lineup has no games that interest you and the Wii U does, then get a Wii U. The PS4 and XB1 will have a lot more games that appeal to the masses in mid to late 2014, thats when the decent games will start coming.
Until then, Wii U has all the games people have been waiting for, and they're all coming early to mid next year. Mario 3D World, Mario Kart, Super Smash Bro's, X, and who knows whats coming late 2014 or early 2015 (I hope Zelda U and a Metroid game). If you've always liked Nintendo titles, now is the time to get a Wii U.
2) Cost. $400-$500 JUST for a console is a lot. $300 gets you a console and two games if you buy a Wii U right now. Another $60 gets your Mario 3D World and you're still spending less than what a PS4 alone cost. Nothing against a PS4, but we're going to talk pro's and con's... this is a big pro for the Wii U.
and finally...
3) Exclusives. We all know exclusives is what really sales consoles (ex. PS3: God of War, Gran Turismo, Uncharted, Little Big Planet, Infamous, Last of Us, etc.). If you like Nintendo games (Mario, Smash Bros, Mario Kart), 2013 4 QTR and 2014 1-2 QTR is the time to get a Wii U. If you could care less about Nintendo exclusives, there's no reason to even consider a Wii U....but.. if you want the best survival horror game to date (Zombi U), maybe you should consider the Wii U for that game alone (Zombi U is so damn scarey and hard!).
I plan to get a PS4 because I have a lot of faith in Sony's ability to score big contracts to create amazing games. The exclusives the PS3 had were insanely out of this world good. I can't wait to see what the PS4 brings out from Naughty Dog and Sony themselves. However, I won't be getting one anytime soon, I'm thinking I'll get one Q3 next year. Now on to the competition...the XB1.... I have zero faith in Microsoft bringing REALLY good exclusives. All they had with Xbox and Xbox 360 was Halo, Forza series, and... Fable? ( crickets. )