Jeez, what are you guys so worried about, it's only a Ringmaster. 
Sacrilege! "Only" a Ringmaster??? If your a shooter Is it "only" a 1911A1? If you're in the Air Force Is it "only" a C-130 Hercules? If your a railroader is it "only" a SD-40-2?
The Ringmaster is THE definitive profile mid size "stunt" design! It's as much of a classic as anything out there, only better because for so many people it was the means of entry into larger planes, and into stunt flying. Were there better cars than a Ford Pinto or Chevy Vega? Yes, certainly. But how many kids got their start driving something like them?
Don't knock the Ringmaster just because it was very basic, very simple and perhaps didn't have a perfect airfoil shape. It flew! It flew very well if built right and trimmed well. And it was affordable and easily built by the masses.