I have to say I'm very impressed with the product quality, design and instructions. Everything was simple to follow and the components seem strong and well designed, but simple and easy to operate. I was pleasantly surprised to be able to pull over to the side of the road and quickly adjust the screen while still seated. The deflector is OEM windshield quality plastic. However, I'm finding it's not really eliminating the buffeting enough for my liking. It didn't feel it fair to give it a 4 as there are so many variables that could affect it's efficiency. It could be I need to spend more time experimenting and comparing, or just adjust my expectations that buffeting will never be completely eliminated. It does help at non-highway speeds, but it was highway speeds I wanted the buffeting stopped the most. I'll keep it and keep trying different positions to see if it can improve. But I don't want it so high I have to look through it. I was hoping the wing effect would help push the wind up higher over my head without having the deflector up full height. So I'll give it a 5 based on quality and design. If there was a 4.5 rating, I'd probably give it that.