have use a fsa wing compact on several bikes. just built up a CANYON AEROAD and felt an aero bar would be good. did not want a barstem combo do to my personal finickiness re set up. I opted for the Zipp SL-70 Aero Carbon Handlebar for it's aero design, weight, ergonomics and road abortion attributes. I am not disappointed with the bars. the geometry is almost identical to the fsa's I am used to which was a primary reason for my choice. these are the first carbon bars I have used to date.
I wanted aero bars for awhile, but held off because they're expensive and my regular bars were fine. I finally made the switch and I'm so glad I did. These bars (paired with Zipp stem) feel incredibly solid and are extremely comfortable. Really enjoying them. Wish I'd switched earlier.