I have only one Masuyama, the 50mm/53 degree. So by default it is my favorite Masuyama. BUT it is also one on my favorite long focal length eyepieces of my whole collection.
In my C11 Edge operating at F/7, the Masuymama provides excellent max exit pupil views with crisp stars to the edge. It gives me the best Rosette Nebula view of all my long FL eyepieces (Pentax 40XW, ES40-68, ES30-82, ES25-100, AT20-100XWA).
I have the 16/85 on my wish list for planetary binoviewing at F/17-F/26.
I was thinking about putting the 50mm Masuyama on my list, especially for my C9.25 edge. I assume you are using the dedicated reducer for that, that must be a heavy setup for visual. How is the correction of the 50mm in your C11 Edge without the reducer?