Most of my home builds have utilized 4+1 phase power simply due to the mini-itx form factor (well that and not being able to afford the 1 or 2 compatible 1155 boards with 8+2). Once the Zen platform is out, I may pull the trigger on a new build. Definitely going with a larger case, and possibly matx if the mini-itx offerings are not good (or if I want multiple graphics cards).
Definitely looking forward to some Ryzen folding!!