Wii u is actually way better as its the intended console

I would say PC. Even tho it has less in game features it has way more customizability, and mods. You can't go wrong with either version tho. :)

you can mod the wii u version too!

Actually, Wii U version is better, because of it's exclusive collaborations having Yoshi & Zelda levels DLC.

Even if this game gets re-released on current consoles, most probably, won't even have those exclusive levels I mentioned previously (Not even on Switch because of licences and Copyright). So yeah, Wii U is the best version.