I had a lot of fun playing with the Retina Reflex, Retina IIIS and Bessamatic, but found other cameras to be more effective photographic tools. Not because of "features", but mainly ergonomics, poor close focusing distances because of their mount.
That's understandable. I like mine because I'm strange. I sometimes like to be seem with odd, quirky equipment!
"People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.