I found the A.R.E. one piece fiberglass tops to be far better than Snugtop or Leer although all are good. The A.R.E. hinge system was much sturdier and operated smoother with less effort. Looks great too.
When I got a 5th wheel I had to remove the one piece. I opted for the Bakflip G2. Some other brands are much nicer but also cost considerably more. The Bakflip is well built and easy to install with no drilling etc. I do get some leaks in the front corners but thats only because I haven't bothered to seal them. For my use I don't really care about a few drips. I'm sure with a couple minutes I could get it sealed tight.