Wii U definitely. I have Wii U + PS4 and couldn't be happier about it.
As I owner of all three consoles, I would say get all 3 as soon as you can afford it.
That being said, the first console I'd give up if I had too would be the Wii U. It gets used the least by me.
Its a great console with great games, but most are best enjoyed with a local group gathered around the TV. Not something that happens everyday. Super Mario 3D World is the only game that really is a most own single player experience right now, (Bayo 2 is coming this year as well though.)
Xbox One, despite having an overlap of third party titles, offers some great exclusive that have taken up way more of my time then the Wii U games.
Titan-fall and Killer Instinct are great timesinks. (Ryse is only worth a rent) Sunset Overdrive is coming soon, and looks to have a lot of hours of content + replay value. And don't get me started on how many hours worth of gameplay Halo: MCC is going to bring to the table.
My advice: if you can't afford both, buy a Xbox One this year, get a Wii U next when Zelda U is closer to launch.
Wii U is easily the best companion console to every system this generation.
You save you love Nintendo games so I say go with the WiiU. Nintendo really does a good job of incorporating nostalgia into there games so that lifelong fans of Nintendo will be incredibly happy with the platform
However something to consider about the XB1 is if you will be wanting to take advantage of its kinect/TV features
Hello Gaf.
I am in search for a second console to my PS4 so either a One for a Wii U. I been torn over the past few days and can't decide what to do. I love Nintendo games, but as of right now the only games on Wii U that interest me are Mario 3D World, DKC, and Yoshi Wolly World. For the One its TitanFall, KI, and Soon to be Sunset Overdrive. I know the Xbox One has all the games PS4 does as far as 3rd Party but the games I mentioned before are really dope in my eyes as for Nintendo I am getting a diff experience. Price is not an issue, but I can't decide which one.
thanks.
It seems you have a strong fixation on killing time when it comes to video games, and not having fun? I wish I had that. I have no time to kill, but still need concentrated fun sometimes, which is why I would recommend the Wii U as the secondary.