There is a ton of info on the ROC site about tonneau covers and I think I read it all before I bought my Access about a year and a half ago. I chose it for a bunch of reasons. I like that you get to keep the front upper cleats, it allows use of almost the entire bed when rolled up, allows for good trunk opening, looks good and, being one piece, is not completely but close to waterproof. It was not hard to install but not as easy as I expected either. I carefully applied silicone caulk in addition to the foam insulation when installing the rails to help with the water resistance. I noticed awhile ago that the silicone was weathering, so I took a black permanent marker and went over it. Kind of a weird solution but it looks like new again. Can't recall what I paid off the top of my head but I think it was in the $350 range. Money really wasn't an issue but it does seem like a deal compared to some others. I should say that there are a lot of other options and people seem happy with most of them, so to each his own.