This one is difficult. Xbox One S (formerly known as The Scorpio Project) is a real beast. However, neglecting the most powerful Sony console would be ludicrous. If you are in the position to get both, do that.
I'm a PS fan and always have been, but I don't agree with the PS4 pro. I have the PS4 and bought a Xbox One S for 4K support. It's cheaper and has a 4K Blu-ray drive so you can watch films on it in 4K, Amazon Video 4K and if you really want to some exclusive xbox games. Nothing will beat the PS4 though.