I've gotten a chance to see some P67 boards in action and really liked them. The P8P67 pro is on my list of items to purchase when I build in September or so. After seeing the initial reviews, I'm still leaning towards a P67 chipset over a Z68.
Why? As far as I can tell, the Z68 will cost more for two new features I do not plan on using.
1. QuickSync video + Discrete GPU looks great paper, but so far it looks like Virtu's solution isnt very mature yet. On top of that, the list of encoders that support QuickSync video right now is small, so my choices are limited. Since I don't have to encode/transcode video too often (and I can give the job to a second PC using my choice of encoders), the benefit for me isn't so big.
2. Likewise, the Z68 is positioned as an enthusiast chipset. I know SRT will eventually make it down to all motherboard price tiers, and not all building enthusiasts have a lot of money to spend. Still, right now I do have money to purchase a "full sized" SSD, and I'd rather spend the extra money to get a decent amount of SSD space with full SSD performance, rather than a hybrid solution.
I'm not blaming ASUS or any other manufacturer. I think the biggest issue is timing. Sandy Bridge required intel and motherboard makers to put out a supporting performance chipset (P67) before Intel SRT was ready. It does close to 100% of what enthusiasts want, even if it only has 80% of the features Intel wants to showcase. When Z68 finally comes to market in large numbers, a lot of enthusiasts will have already seen that P67 chipsets take care of their needs.
Sabina - i7-3930k | P9x79 Pro | PH-TC14PE w/ 2x TY-140 | 16GB DDR3-1600 1.25V | 2x Samsung 830 256GB | GTX680
Circe - Disconnected and Disconcerted