The fairing depends mostly on the bent. The ez rider type bent has the rider in a more upright position. Highracers put the rider in a more laid back position, 20-25 degrees in some cases. Some of the Bacchetta guys with Aeros and the faster bikes who are laid back claim a speed loss with a fairing. Of course, ymmv. I went with a Strada, and find it easy to cruise at 22-23 where I used to do 19-20 on my wedgie.