The Konica RF has great features like mid roll change capability and an easier view of the 35mm frame vs a .72 M6. Additionally, reported lens quality equals the best Mandler designs. Does anyone prefer the Konica to a M? Has anyone switched to Konica and come back to Leica? I've read Danta Stella's site http://www.dantestella.com/technical/hexarrf.html and I understand there are no back focus issues using Konica's lenses. I'm interested in your experiences with the Konica.