My bike came with a powerbronze screen fitted. It is decent and offers good protection.
However, I have tried changing the settings and haven't yet managed to solve the wind buffeting at motorway speeds.
Incidentally, I took the screen off today and rode without and there was no buffeting at all - just a significant amount of breeze at 70mph+.
I'm considering buying one of the small sports screens as a solution, at least for the summer.
I'm 6'6 so not sure the big screens are suitable for someone my height. Any suggestions are welcome !!