our adco designer series is going on year number 4, and likely will give us another year. But we don't get much wind. I'm happy with it. It did develop a few holes in the roof section this past winter, but I think they are from birds rather than rubbing against anything.
However, since we got the adco, several companies have come out with what I think might be better covers. One uses ripstop nylon rather than the non woven polyester that adco and many others use. That's what I'll seriously look at next time.