Another vote for Aurora. I always kept one on my Champion. I was disappointed to find out they don't have measurements for my new CC Bay boat. I got a different brand and it is not in yet. Time will tell with it.
I've got a custom aurora cover for my skeeter. My dad has a Nolan's cover on his. I will be buying a Nolan's cover to replace mine. Nolan's is a way better cover in my opinion, it just doesn't have all the cool skeeter logos on it.