I had an adco, lasted for about 5 years. finally the sides started to break down from sunlight. I like it, gave good protection, good fit, but they are heavy, bulky and hard to handle and store. It was not a one person job to put it on or take it off. And it took a LARGE garbage can to store it.
So... when I replaced it my local dealer recomended the classic accesories perma pro cover. It's now 4 years old and doing well, at least as good as the adco. Advantage is much easier to put on, much lighter weight, easy to store, actually fits in the bag it came in, and better placement of side zippers and back zippers.
Downside is the Adco was a very good fit for length, the length break was right at my length. The Classic accy has a few extra feet at the back that gets folded back.
My preference is the Classic accy. I can easily put it on or take it off myself. easy to handle and seems to be holding up as well as the adco.
As others mentioned good life comes with good prep. cover sharp edges, make sure the cover is snug but not to tight.
Adco and many mfg use a mat of plastic on the sides it's not woven together. So if it deteriorates or tears it keeps going. The classic accy uses ripstop nylon for the sides. so sunlight doesn't degrade it as fast, and if it gets a tear it will stop.
IMHO either brand is good, pick what's important to you.