I've only had this on my truck for about a month and a half. So far, so good. I went camping this weekend and it was so nice not having to worry about anything in the bed falling out of coming loose. I filled my bed to the top of the Fas-Top, no problem.
I was concerned at first because I had a hard time closing the "roll bar". Now it closes much easier. I tighten the cam straps and can lock it much easier now. I wish the instructions on how to install were better. Ie: I didn't get what the "roll bar" was for a while. In my mind I was trying to picture a traditional roll bar and was like "what are they talking about?!" Maybe if the instructions defined everything at the beginning and had pictures of the item, that would help.
I was on lots of dusty backroads scouting a spot and then camping. The Fas-Top got extremely dusty, as did everything else. I drove through a rain storm on the highway on the way back and it took off all the dust! I've not run it through a carwash yet so IDK what that will be like.
One thing is it gets very hot (I have the black one).
Of course, we'll see how it does winter time.