2'' wider than standard and 4" higher. Before that I had the Adventure screen on the GS.
I suffrered a lot of Buffeting with the adventure screen. I'm 6'3" and sit pretty tall on the bike so probably should expect it. I would have gone for Tobinators first but the screen came up for sale on this site so went with that as an experiment.
Had it a year now. In general I'm very happy with it. It protects me from a lot of buffeting, so long trips and my commute to work became a lot less of a chore. Screen clarity is good also.
On the down side, the top of the screen sits right in the middle of my vision. I only really get annoyed about this during city riding. Aesthetically, the adventure screen looked a lot better IMO.
I had the standard shape 2" wider 4" taller version on an 1150 GSA with a TT screen spoiler on top. I found it fantastic at protecting me from wind rain etc and could ride visor up at motorway speed no probs. The downside was that in the summer you got no air flow at all and got feckin hot, feckin quick (it probably took 10mph of the top speed too).
I'm going to replace my standard screen with a vario soon though to give more versatility.