@tobyus: I just picked it up with an Xbox One today. I'm loving 'em both.
As for PS4 impressions, I'm pretty satisfied with it's potential so far. The UI is easy enough to navigate, although I do miss being able to customize it. I'm disappointed in the lack of external USB support. The same also goes for the lack of media file support, such as MP3's. But from what I understand, Sony's gonna hotfix it eventually, so it's not that big of a deal. Games are....OK. It's the launch window. There's really not a whole lot that really catches my eye. That's just how it goes, sometimes. They do look nice, though.
One thing that really stands out for me is how loud it is compared to the Xbox One. The latter is whisper quiet, while the PS4 reminds me of that obnoxious relative who won't shut up. "HEY, XBONE! CHECK IT OUT WE'RE PLAYING A GAME IN NATIVE 1080P AND 60 FPS! IT'S PRETTY PUPPY AWESOME, MAN! HUH? CHECK OUT WHAT? OH, UPLOAD STUDIO! YEAH, IT'S COOL! SORRY, MAN, WE COULDN'T HEAR YOU OVER ALL THIS HORSEPOWER! HEY, LET'S STAND IN FRONT OF KINECT AND GET A PICTURE! LOOK AT THESE TERAFLOPS, BRO!"
All jokes aside, I'm cool. I'll keep you posted as I get more into it. : )