If I were competing in Handgun Sillouette matches where I would likely use my revolvers in Single action or with heavy loads, I likely would shoot a Ruger... However, since I now shoot the action games with a Revolver (ICORE, USPSA/IPSC) I favor my S&W model 610 classic shooting light 40 cal ammo in the large N frame due to the ability to get a tuned double action trigger pull far superior to a Ruger and the fact that Ruger, to this day does not make a factory moon clipped DA Revolver (that I know of).
At the USPSA nationals, S&W Dominates the pack. Usually with 625's, 686's, a few 640's, and a few 610's. At the IRC, the 627 is the revolver of choice for Open and Limited, with a sprinkling of 610's, 686's, 625's, and some of the smaller snubbies.. I've not seen many Rugers of any flavor though they are sponsoring a stage this year and if I read it right, they are sponsoring a side match also.
My 610 has easily over 100,000 rounds through it. The first 5 or 6 years I wore out 500 pieces of 10 mm brass reloading/shooting full power ammo. The last 5 or 6 years I have shot as few as 5,000 and as many as 15,000 rounds through it for competition and practice.. It's not anywhere near worn out yet.
I did start shooting wheelguns with Ruger though and I still own my light barrel GP-100, but for shooting competitively, I still prefer the S&W DA trigger over the Ruger any day of the week..