Lowest Profile Tonneau Cover?
 

Been looking and looking at Tonneau covers. Ive researched Bak Flip, Undercover, Extang, and SEVERAL others. Not really interested in "Roll Back" covers, would like a folding cover.

My question is, what folding cover has the lowest profile? Ive noticed some of the covers place the rails on the existing bed rails causing the cover to stick up a little bit. Some of them really stick up like the Peragon, and Retrax. From the pics and videos I have seen of the Bak flip F1, Undercover Flex looks like the lowest profile ones. I dont want to see it really sticking up when looking at it from the side. Id like for people not to notice it, unless they walked up to the truck.


The one positive to the Bak flip is I can add the Hidden tool box, but Ive heard horror stories of the Customer service with Bak.

Thoughts and opinions are needed and appreciated.

I really like my f-1 bakflip I used customer service once to get more d-rings, and had know problems.