fiberglass lids are just not useful in most situations, I dont want to count the number of times I helped my neighbor remove his so he could get something over the height of his bed in the truck.
I been a fan of the Lund and truxedo lines. I have had both and both have held up over the test of time without having to deal with the snaps. Yes it makes entering the front of the bed a little less easy since you need to roll it up, but I never found that to be an issue.
I thought about the tri-folds, but since I have a backrack none of them where compatible at the time.