Civivi was the first thing I searched. Their particular "Damascus" is based on 9Cr18Mov. At least with their regular 9Cr18Mov, performance is exceptional. They seem to have the best heat treatment for that steel in the current market. I was a little surprised not to see a fixed blade in their Damascus but then again, I think they've only recently started doing fixed blades.
Looking at the BladeHQ results I linked above, I'm not familiar with some of these brands. I've seen some tests of really cheap "Damascus" that performed on par with price. Like with regular steel, performance depends on the actual composition, heat treatment, blade geometry, etc. An additional challenge here is not knowing what steel or steels are used in different versions of "Damascus". Hopefully, somebody with experience can thin the results for us.