Interesting that you post this, as I just purchased a 21/28 combo to go with a new Bessa R4A. I went with an option that you didn't list: The Zeiss ZM 21 & 28. The Zeiss's are made in Japan by Cosina (as are the Voiglander Skopars) but to a higher quality level and better optical designs. You might want to check them out. Their price comes between that of Voigtlander and Leica.