There will always be a search for the absolute best but there will never be an absolute answer. I own S&W, Colt, Ruger, and Korth double action revolvers and have shot about everything else, from the Roehm, Rossi, Taurus, Astra, Weihrauch, Sauer & Sohn Hawes DA, Manurhin revolvers and cannot come up with an ultimate answer.
When I compare the top-quality revolvers I find not only a negligible difference in utilitarian value but often that each one has at least one strong point that the others are missing.
Personal opinion, however, will lead to personal favourites.