PS4, because Sony make the best games
As for whether I'll get any others... I doubt it. I haven't owned anything made by Nintendo since my GBA and I'd be far more likely to get a 3DS given the Vita's bleak horizon than a Wii U
As for the Xbox One, I doubt it. M$ let me down really badly last gen as I basically bought 2 games on it in the last few years, there's a reason my 360 collection is ~30-40 vs my PS3 collection of >130. I'll miss Gears and I'll miss my Commander Shepherd. But I don't think I'm going to get a chance to miss Halo Wars 2 or Lost Odyssey 2
Anyway, I have a high powered gaming PC (Nvidia 670, but she may get an upgrade for Star Citizen)