My vote is the xtang too... I have the tilting kind. I've had it for a couple of years now and have yet needed to do anymore than tilt it up to get anything into or out of the bed.
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If needed, it'll slide off the front hinge as a whole unit so you don't even have to roll it up for that case!
Before this one, I had the traditional kind, but it didn't have snaps, but was still a PITA to peel back and put back on, just to reach into the bed...
My dad has a fiberglass tonneau cover and that thing is HEAVY... He built a hoist system in his garage to lift it off!
Anyway, that's my story!
Good luck with whatever you get!
Mitch