My biggest criticism about Ruger revolvers has been the sharp edges. They can cut you. I wish the hammer on my SRH was smoothed out as it cuts if it meets skin. The edges around the trigger guard is another area where they could improve.
I never expected the fit and finish of a S&W or Colt when I buy Rugers. I am pleased with the revolvers overall. Ruger occupies the #3 position relative to numbers in my accumulation.