I think the 686 is. But that is just one person's opinion, and the New Colt Python hasn't been out long enough to know for sure, anyway.
I had 4 of the original ones back when they were current production and none of them held up to the rigors of competitive shooting. Even a M19 from the same era went way beyond the Pythons.
I would take a 586/686 over a Manhurin, Korth, or anything else. The high end guns are superbly crafted, and beautiful works of art, but the Smith can still have a better DA trigger pull. Any of them can have a good SA trigger, but I never shoot SA. There is no need if you have a really good DA.
Everyone has their own way of doing things, so it comes down to personal choices, as in - "what works best for you?". No one is wrong, just different.