My cousins are raving over that game! They have it for the 3DS.
Me on the other hand, I neither have a 3DS nor a Wii U. I do have SSB Brawl on the Wii, but I can't play online yet.
When it comes to getting a new Nintendo console/handheld, it won't happen yet. And before I get any of those, I'm going to get an Xbox One first.