I currently have the Undercover Flex and have also had the Bakflip G2 on my previous Ram. IMO the Bakflip was better quality and held up better. On the Flex I've had to re-glue weather stripping and had Undercover send me parts to fix one of the rods that hold up the cover when it's fully folded.
1969 Dart 408 W2
540 ft lbs
1979 Lil Red Express
born the same month and year as me!