Over the past 60+years I've owned and used four RF Leicas, several 35mm RF Canons and other brands, many Nikon SLR products, and other 35mm cameras. There was no inexplicable or mystical quality to the Leicas. Mine were superbly engineered and built, and durable. Other cameras could produce images comparable to the Leicas when used in comparable circumstances. It takes a rare and unbiased analysis to detect any difference. Some photographers get even better images from their SLR Nikons, Canons, and others because a RF camera is foreign to them. It's like farmers with their 4WD work trucks vs Ferarri drivers. Neither would benefit from swapping their vehicles.