Kupepe

Hello, I am shooting film and I need to enter the digital age with an XT20 for faster workflow ... and to attend a year of photography education Coming from film I am interested to buy a Leica lens that will go to an Leica M6 body I intend to buy in the future ... Based on your experience, which Leica lens would you suggest for a 35 or 50 mm focal length ? I cannot afford the new Leica lens, so I am going for a used Summicron edition. Thank you