Ermax screen review - it didn't work for me. I'm 6'2 and 78kg. The screen was actually worse than the little stock one. It pushed the air right onto the centre of my helmet, and also created a lot of turbulence behind the screen that was very noticeable. TBH, it made the bike almost unrideable. That's just my experience tho, it might work well for shorter folk and is well priced.
Also, good service and a prompt and hassle free refund from the guys at pyramid plastics in the UK 👍