Eh, I'd save my money for retro games and consoles. There aren't anything out there worth buying a next-gen console, except for Nintendo titles. So I'm sticking with Wii U (although I don't own one yet). If you REALLY have to pick between PS4 or Xbox One, I would choose the PS4, simply because Sony got it right this generation. So everybody and their moms are going to support the system. There will be many games on the PS4, both exclusive and multi-platform.
But as for me, I just bought a Turbografx-CD system last month. So, I'm going to stick with that for a long while. Hehe.