When I overhauled my "vintage racer" to better fit my over-50 body, I decided that I had to raise the bars quite a bit. Considered the Moustache, but ended up buying the Noodle because I couldn't give up having drops, and the drop bar "look" on the bike. I have two other bikes that I'm building, for variety in function/typology, and I may get the Moustache for one of them, just for kicks -- or the Albatross or Soma's Swallow, which look very nice.

It seems that people either love the Moustache bars, or can't abide them; there doesn't seem to be much middle ground. I really like the Noodle, and I can't recall anyone who's used them saying that they didn't like them -- just seems to be an optimized version of the drop bar. The curvature on the top bar does seem to make more ergonomic sense, and provides additional ways to grab the bar that are comfortable.