fiberglass vs composite roof

Best roof there is, is an aluminum, one piece roof. Fiberglass is second. Rubber roofs are basically expiration dates stamped on the rig, mainly because there are so many cracks around the edges that have to be perfectly sealed, or else one gets a leak.

My ideal roof would be a one piece aluminum roof, with a RV-Armor like epoxy elastomer spray over, creating a seamless roof. That way, a poke from a twig won't cause a major leak.