These are two different classes of rifle in my opinion. I've not shot a cva, but I believe they are just an entry level single shot. I'm sure it will shoot well, and get the job done. But it's entirely different from a marlin lever. I suppose it depends on what you want. I like lever rifles, and wouldn't really care for a single shot. But if that's what you want, go for it. I can't speak on the quality of a cva, I don't think I've ever handled one. The quality on the marlin should be good.
-Jake