I got a Russo Canoe Cover just over a year ago. I used it on 4 river trips over the summers and really loved it. I have a Mad River and it worked really well. It was easy to install because it uses hooks instead of snaps.
The only disadvantage was it was not a custom fit but they say it will fit a variety of canoes. It did have extra fabric in the middle which is nice when you have gear that is above gunnels. I also liked how it stores in its own pocket. They will install it for you if you are in the area, but it is pretty easy to install yourself.