We use the ADCO. Agree with soundguy, we only cover in the off season, which for us is the summer. We take in volunteers to help put on and take off, the 32' cover is heavy and cumbersome, hence why we only do it once a year.
Our first TT died from the sun (it did take 13 years), here in AZ it is hot and dried out all the plastics and vinyl and the expansion and contraction of the extreme temperature all 4 sides delaminated (no water ever got it). So when we bought our second TT the first stop down the block we bought the cover. I can say the cover doesn't last that long, again the heat dries it out so our last cover only lasted 1 season, we have to be very careful when pulling it off as not to put much stress on any seam. ADCO does warranty it so we just took it in and it was replaced.