Aside from the retractable floats, OZx Goose can't even compare to the default Inibuilds/Asobo version. It's a different league.
OZx doesn't even include a proper 3D cockpit (let alone a passenger cabin). You can compare Inibuilds/Asobo version to payware Big Radials' if you want (and I'm still unclear which one to prefer), but OZx is just an early attempt from previous times, unfinished and totally outdated today (to me anyway).
As for the repaints, there are less for the default version because it was released much later, and also because the paint scheme apparently included some specific texture matching problems which kept repainters away from it for a long time, but that was only until Crispy136 burst onto the scene. He finally managed to fix those problems and came out with quite a bunch of wonderful repaints for it. You can find them on the usual sites.