I recently traded my 50L and 85mm 1.8 for 85L II. Needless to say 85 is the best Canon portrait lens in terms of IQ but I miss the 'soft' feel that 50L produces at 1.2. When I bought 50L I was kinda disappointed in the beginning looking at the pics taken wide open but soon realized that the softness is one of the best things that 50L has to offer. I took some amazing pics with it at my nephew's party and miss it dearly. I traded it for 85L because I needed something longer and wanted to try 85L after reading the rave reviews it gets. Anyways planning to buy one again in the near future. I have 50mm 1.8 Mark 1 now and will replace it with 50L and Sigma 50mm (had this lens, loved it, very good copy but traded it for 50L). Although the FL matches I think Sigmalux and 50L serve two different purposes.
Thanks for reading!