I've honestly got no favorites since I barely use current-gen consoles that I own. As for the winner between Xbox and PS, we'll see later this year when customers vote with their wallet.
It's a bit different for me as I've been a console gamer since the 2600 (trust me, I'm still in my 30s). Sony has gotten the most important thing right, which is the price of the console. $399 vs. $499 is a stark contrast that many people will be able to make without getting into the particulars of the system. Once PS4 gamers start telling fencesitters who are not that tuned into gaming that you don't have restrictions on used games or have to do a 24 online checkin lest your console gets an error and prevents you from playing, I think the PS4 will garner more buyers.
And for those who are really tuned into game, PS4 will be region free, unlike the Xbox One which will be region locked. I'll be shopping much more on Play-Asia and it won't be for their overpriced anime.