This is the one lens I always come back to, whenever I foolishly part with it for the latest and greatest.
If ever write a full review about the Leica 50mm Summilux ASPH f/1.4, I will include the table below, which I put together using data from Lenscore.org.
If there is another 50mm lens out there that better balances performance, speed, size, build quality — and even price — I haven’t seen it.
—Peter.
(click the table for a larger view)
Prosophos 
No, this post doesn’t mean that I sold and bought it again, or that I’m about to sell it again.
I’m just enjoying having it, and was contemplating writing a review about it someday…. but not this day.
Yeah it’s the best value all round.
I think there’s something wrong with the chart. The Otus has more resolving power than the ASPH Summilux.