If so which did you go for, and why?
I've been mostly an Xbox gamer since the first console launched, but i do have a PS3 for my blu-ray movies. My best gaming has been on the 360. Really awesome times.
Having said that i've pre-ordered the PS4 and not the Xbox One for mostly financial reasons. I don't have a lot of disposable income, so pre-owned games make up about 50% of my purchases. Add that to the fact the console is cheaper and it was a no brainer.
I hesitate to mention the other reason because it's hard to explain not wanting an always online camera and mic in my living-room without sounding like a tinfoil hat wearing kook.