EVGA x99 Micro. I used that board before and it worked great. I also ordered it again after another board I had went out.
I had a bad experience with the ASRock x99 Fatal1ty (USB 3.1), so I'd avoid that one personally.
Since I can't post retail deals in the deals section, I just wanted to let you know these were in stock for non-ridiculous prices. This may actually be the right price for the SC model.