I think I mentioned the screen I bought for the GS was causing buffeting. Well to day I took delivery of a new Powerbronze tall screen and as the weather was again very average I installed it today.
It certainly looks better than the Wunderlich. It's shape seems to fit the combination of curved and angular lines of the F700GS. It is also more swept back, curved and looks less door like. Hopefully it will spill air onto shoulders and leave the helmet in cleaner air.
On the down side it is not as wide and it uses existing 4 mounting bolts. So it looks as though it will wobble more than the Wuderlich which had an extra support mount.
Keen for some fine weather to try it out.