Preferred console, as in which one I prefer between the current gen consoles or any/all of my preferred consoles?
If I go with the first I would say the PS4, and the reason I would put is that I really like the Sony first party games out there and also they have many third party games that are awesome. I also prefer the PS controllers over Nintendo's latest controllers(Wii, WiiU) and the controllers for Xbox-consoles. And of course the hardware in the PS4 and price is the best.
So this gen my preferred console is PS4, but I also like the Wii U, mainly or perhaps only for Nintendo's own games. I will most likely not buy the X1, but of course it is a good console and will have many great games. But I don't feel the need to own three consoles, and the PS4 will have 90% of the games that the X1 will have, since most games are always multi-platform.
And overall I would say that SNES and PS2 are my all time favorites.