I've got the FSAddon and the Flight Replicas Super Cubs, my personal opinion is the Flight Replicas one is better looking and "feels" far better to fly. The only problem I have with it is it bounces wrong on landing. It feels like the Tundra tires are full to breaking point with air, and not soft as they should be.
I'm very sorry to say, I was not impressed with the VC graphics of the FSAddon model, it looks like a toy and that really put me off. It flies and lands pretty well though, I have to give them that. It is no longer installed
Sorry if this offends anyone, but it is only my personal opinion.
Oh if you decide to get the Flight Replicas version for bushflying, and you don't want the others, get the "Extreme Bush" version. I've got the whole lot, and I only really fly the Extreme versions.