I just posted a new comparison that might be a bit of a reality check for some of us. I put the Leica 50mm f/1.4 Summilux (Close Focus) head to head against the Voigtlander 50mm f/1.0 Nokton to see if the price gap actually translates to the final image.
You can check out the full breakdown and samples here: Leica vs. Voigtlander: 50mm Summilux vs. 50mm f/1.0 Nokton
Take a look and let me know if you can actually spot the difference.