Re: what kind of cover?
I have had them all. Cheap, lets say under $100, will fall apart on you in less than a year. I had a nice $300 cover on my last boat. As mentioned, if you go this route treat the straps. Also get good clasps. All my plastic ones broke and I ended up just using bungie cords. The store bought ones are cumbersome and hard to put on by yourself. They collect water when it rains. I even bought poles to keep it up, but it still collected water. It did the trick by keeping the inside from sun and rain, but it was a real pain to use.
On my "new to me" 08 Monterey I have a snap style cover and would never go back. It is easy for 1 person to install, keeps the weather out, and doesnt accumulate water. There is also no straps or clasps to break. It has Taylor Made labels all over it, so I dont know what the material is. It is origional to the boat and still looks brand new. It is black as well and absolutely no sun fading or anything.