Hey Tiberius, I've always been fond of Ruger revolvers. I did a lot of research before I bought my first one. I bought the second one a few months later. I Got the 4" Service Six first then the same in Security Six. These guns are out of production and have been since the 80's. I found the second on line for $300 so I got it. They're getting kinda hard to come by in the gun shops around here. The GP 100's are really nice too. Their frame is a bat larger than the Six series guns. I'm 6'2" but my hands aren't real big. I have to be carful about reach as I prefer to shoot any revolver single action. The GP is a bit big. I know the SP101 from Ruger is a compact frame and I've seen a few 4" versions.The newer ones have something in common with the older Rugers. They are often called "tank strong" and most people say they are stronger and more durable than the S&W. I can't speak to that as I've never had a Smith Revolver. But, if a lot of gun guys feel that way, there may be something to it. I like a 4" revolver Cause I do some hunting. It makes for a good backup game-getter as well as animal/bad guy stopper.
Rugers wheel guns are probably the best value for the buck. The only issue i had was a super redhawk in 454 casull. The cylinder cracked with a hot load. Its a dumb load anyway, i more often shoot .45 colts out of it. The recoil is a joke.