Just installed a Madstad, that I purchase from a fellow from ADV, on my F800 and it is really nice. Quiet and protected. In fact I will not use the "wings" unless it is a particularly cold or wet day as there was a noticeable lack of wind (and hence cooling breeze) with them on. I have used a Cee Baileys 18 and 16 inch and also the laminar lip and none of them come close to the quiet of the madstadt. Will be selling the Cee Baileys as soon as I get them cleaned up.
Now to find one for my wife' F650