Hi,
I've had both, and I personally prefer the S&W over the Ruger Super Blackhawk. I actually sold my good ol' early 3-screw SBH for a nice S&W Model 29 about ten years ago and have never looked back. A gun shop owner called me from out of town and described the gun he'd just traded for (unfluted cylinder, full lug barrel ala the 629 guns, AND the adjustable front "silhouette" front sight (currently removed) and I told him "I'll take it over the phone).
It has done me well for (bowling) pin matches (a double action sport), silhouette matches, fun plinking AND tons of whitetail hunting.
I like the shorter 6" barrel and it carries more comfortably in the woods for me. I topped it with a 1st generation Bushnell Holosight and it groups sub-2" 3-shot groups at 50 yards . . . expanding to 8" at 200 yards (just hold 34" high with my preferred ammo and you can impress your friends launching gallon milk jugs at that distance)!
I've twice dropped three deer in mere seconds with it (once in a clear cut and once in a thick hardwood bottom) and I have lots of really fond memories of various hunts.
I mainly handgun hunt and my S&W is a great overall gun. Mine was made in '89 and I bought it used around 1999 for about $550, IIRC.
Here it is from last season, with an eight point I dropped with a shot that took out the heart . . .
Both revolvers are great . . . but I truly prefer the S&W revolvers.