Oh dudes... It is O.K. that this is a PC forum but man give it a break!
Now ask yourself. What you want? Why you want it? How you want it to be?
You want to build a damn PC or you want to buy a damn console?
You will play on a 1080p TV or you prefer higher resolutions and multi monitors?
I would rather buy a PS4 rather than spending my money on a custom gaming PC at this specific time. Why? Because a PS4 will give a hell of performance for about 2 or 3 years (Who knows). By the time PS4 reaches it's performance pike, a current gen graphics card won't do a damn thing and there will be new, better and cheaper GPUs and processors with updated and upgraded architectures.
PC-wise this is the worst time to "upgrade" (or build) since nothing gets dramatically better after a couple years a new gen arrives, when the industry set new "standards".
On paper a PC smokes PS4's hardware. But asuming you will have a better time playing on a PC because "PCs specz r highr thn everythng on tha mrkt nd graphicz r bettr" is just plain STUPID.
It all depends of you and your expectations, the games you like and how you like to play them.
People on this forum often say that consoles are obsolete since the moment they are announced, but tell me how many dudes you know that can play decently FarCry3, Crysis 3 or Skyrim with a PC built on 2005 (and never upgraded) with a budget of $299 or $599?
I came to this forum to ask assistance about a gaming PC I wanted to build, but at this time I don't think I will gonna build it, at least not for gaming... If you want to keep things simple and you can get past of the problems consoles have go for a PS4, if your priority is playing games at ULTRA settings no matter what then go for a PC.
You know? I rather buy a PS4 and wait a couple years till PC hardware gets even better. So I'll stick with my 1080pTV, my console and my sofa for now.