Think i'm going to go with the PS4 at launch. While i'm an xbox guy (probably doesn't need to be said) Sony just seems to have ther **** together far more than Microsoft does. I don't really want to get burned with a repeat of the RROD with MS rushing to get to production.
Added the amount of indie games sony is getting is building a very steam like status around the whole playstation ecosystem and I kind of want to be in the know when big indies come out. Plus those will fill the gaps between big releases pretty nicely and PS+ is a good ass service.
Finally the pricing is a big factor. For the $400 I get a Playstation 4 and a 2 week trail of PS+ that nets you Resogun as well Drive Club in the first month. For the Nearly $600 for a PS4 and two games I can have a PS4, a Vita, and six games between the both of them.
Still going to grab an X1 next year in hopes of a price cut. So I'll probably be trying to get a PS4 at launch, failing i'm grabbing a Wii U zelda bundle. Than next spring I'll grab the sony/nintendo system I didn't get and next fall when Quantum Break and Halo hit i'll go with the Xbox One.