I picked up a PS4 at launch; but I'm mainly a PC guy. Here are my feelings.
I feel that the PS4 was a good investment; but I don't often use it for games other than local multiplayer (niddhogg, puyo puyo tetris, et cetera). It has become a way to watch Netflix, Plex, Crunchyroll, et cetera on our couch with the possibility for games as well. When games I'm excited for like Uncharted 4 come out, then I'll definitely play the exclusives there; but, as mentioned in the header, I mainly use PC to play my games.
As for the Xbone - it seems fine; but I am personally not interested in any of the exclusives (sunset overdrive looks okay, and forza is a cool series; but still, not going to drop 400 bucks on another console for those). We also don't have cable, so a lot of the TV functionality would go unused. The kinect seems interesting, but it's not really something I'm overly interested in. I feel like Microsoft has done a lot to get back into the console game; but I can't justify having two systems that I won't be using too often.
The WiiU seems great - I will probably pick one of those up in the near future.