They stopped making the Super Recording in 1950, replacing it with the Recording. Bleh.
The Opera, the Mendez, and the Super are the Olds horns to own, in my honest opinion.
About how it compares with the super horns of today, I haven't played the Super or the Opera yet, but the Mendez feels and sounds almost exactly like a Kanstul 1503. You need to speak more with Happy Canuck. He is THE Olds man here, period.
Van