I've had my SLK 171 since 2007 and driven it maybe twice a week because of my location (Seattle). With this windscreen from windblox, I drive it at least five times a week. The etchings that windblox does are excellent, too. I was going to buy the screen and have sent in for etching. Windblox did it just as good for a lot less (Posted on 6/14/14)
Purchased smoke tint windscreen four months ago and have had it on my car non-stop since then. It has worked perfectly and stayed in mint condition from day 1 to day 120. I would say it cuts down the majority of the wind by far. I even smashed into it a few times with my arm and it has stayed in place fine. (Posted on 6/14/14)
The best part about this windscreen, besides the fact that it works excellent and is of the highest quality (no bending, buckling, has a solid mounting system, etc), is the fact that it is affordable! Just take a look at the other manufacturers on a Windscreen Reviews | Wind Deflector Review website, and you will see that they easily run 2-3 times as much. Although some may not care for the straps (that come in both clear and black) Windblox uses, they still keep the windscreen mounted solid for months at a time. I'm sold. It's finally a good windscreen at a decent cost. (Posted on 6/14/14)