To me the jump to next gen is valid when graphics during regular gameplay look the way they looked during in-engine cut sceens during the previous gen. Having said that, both Xbone and PS4 are valid next gen consoles.
Still, I've decided to move to PC gaming now (I've already selected the parts for my PC and right now I'm searching for best prices), but not because of better graphics, but a much wider array of gaming experience that a PC has to offer. I can't play RTS games on a console and it really bothers me. Almost all console games are shooters and I was raised on Red Alert and Starcraft, so I miss these kinds of games. I miss Starcraft 2, I miss Company of Heroes, I can't wait for Total War: Warhammer. I won't get these games on a console, while I'll get almost all shooters on PC, with better graphics and mods on top. I'll wait with the purchase of PS4/Xbone till I get a decent raise 
In the mean time, my backlog on PS3 and Vita is enough to satisfy the console experience itch 
That's why I've decided to go PC now, while keeping an eye on what Nintendo is doing, cause they are doing stuff that PC doesn't offer.
Wii U is a GCN 2 - I called it months before the release!
My Vita to-buy list: The Walking Dead, Persona 4 Golden, Need for Speed: Most Wanted, TearAway, Ys: Memories of Celceta, Muramasa: The Demon Blade, History: Legends of War, FIFA 13, Final Fantasy HD X, X-2, Worms Revolution Extreme, The Amazing Spiderman, Batman: Arkham Origins Blackgate - too many no-gaemz :/
My consoles: PS2 Slim, PS3 Slim 320 GB, PSV 32 GB, Wii, DSi.
