Ron, thank you Agreed, the 50 Lux Asph would be first choice, over the 75 Lux. If you do decide on a 75 Lux, be very discerning on getting on a good copy.
Great shots! I am really liking your shots with the 75 Summarit. The colours are very rich, and there is a lot of depth within. Congrats on the CV 12 too.
My only lens on order now is the 21 SEM. I have been offered a 18 SEM at a very good price, but my preference is a 21mm, as I have the CV external viewfinder for 21/25