An update on the Airflow. I fitted mine which was very straightforward having taken screen off and put them on the GS before. I've got tobinators from a old screen and have left them on, with the screen on the second bottom notch, and have the lower screen on the highest setting. The small screen is about 1/2 way up. I don't have winglets.
There's a noticeable improvement in airflow, and it's easy to get to 100+ without really noticing the speed, but still some buffeting, despite moving the screen around.
Two small points - I need to get the longer screen adjuster bolts, as the ones on my 05 are long enough to fit the screen supports and spacer, but then with the captive nut installed at the other end, don't unscrew enough to give enough "slack" to adjust the screen height easily.
Second, it squeaks. There is some movement of the screen as the bike goes along, which I think makes the small screen move a bit, causing a squeak. I think it's probably because I need to tighten the nuts on the upper screen mount, but it's driving me nuts currently.
Overall, I'm pleased with it - it's better than the standard screen, standard screen + aerotrim, Nippy high and wide, and Nippy high and wide with aerotrim.
