You forgot about Z68 Pro3, Z68M/USB3 and Z68 Pro3-M.
I'm currently using Z68 Pro3 at another rig, paid $104 for it. Don't really care about SLI/Crossfire and I want as many expansion slots as possible so this board suits me. Overall I like this board very much. Although I can still feel a quality difference between ASRock and ASUS.
Comments about Z68 Pro3
* MOSFET heatsink is flimsy on this board. It can wiggle if you touch them.
* Fan control on this board can really use some improvements. Unlike other boards where its speed adjusts according to CPU temperature, ASRock does it in two speed. Fan is run at target speed (minimum fan speed) until it exceeds target temperature, at which point CPU fan speed dramatically increase.
* ASRock should move the PCIe x1 slot right below PCIe x16 to the top. One PCIe x1 slot is blocked by video card.