I still say that the lower, perhaps original screen will always be the quietest, higher screens lift the airflow up to your helmet, a lot more buffeting going on.Clean ,undisturbed air on you helmet is a lot quieter.
a pic of my powerbronze double bubble..shorter than stock screen this one is 29cm long but the bubble is a lot deeper than Yam one..
Any chance of some photo's Andy - I'm wanting double bubbles for both our Fazer's (a 600 and a 1000) and was going to go Powerbronze, but don't like the idea that it's shorter than standard screen.Always liked Puig DB screens on other bikes.