Tri-Fold Hard Tonneau Opinions

Looking at tri-fold hard tonneau covers and am interested in other people's experience as it relates to Undercover Armor Flex, Undercover Ultra Flex, and Bak Flip MX4. They're all priced similarly and feature the ability for full use of the bed when needed without having to fully remove it, which is important to me.

1. Any issues driving at highway speeds or in windy conditions with it in the full upright position?

Especially interested in this because of MX4 resting against cab (does it scuff the cab paint?) and the Undercover tonneau covers stand up 90 degrees and don't touch the cab (but is it stable enough being supported by only the rods)?​

2. Any issues with the rods that hold it in place in the full upright position?

3. Any issues with the durability of the seals where the panels fold?

4. Any other thoughts?

Thanks!

 

I have an Undercover Flex on my 2017. Had no trouble going 60mph with cover at 90 degrees.