Flex-O-Fold hands down, this is not even a close one. Our Martec was such a POS that I still find it hard to laugh about many years later without getting a pit in my stomach. I have installed many Flex-O-Folds and not had a single complaint or problem. I also race on two boats with them and have extensive mileage with them and they just work.. Nothing fancy but well built and engineered..

My 2¢