I've seen separation on a Rodenstock lens too of that vintage. While being an enlarger lens, i.e. a Rodagon, the lens cannot be used for a full size negative. On the Schneider side, Schneideritis is only a cosmetical issue. But apart from the separation issues with the Rodie, there is really nothing to tell these lenses apart in terms of performance, apart from finding the best specimen.
Given the results from your polls here and at lfphoto.info, I recon the answer is pretty unanimous.
//Björn