J.P. Sauer and Sohn is indeed a quality manufacturer of firearms. They made their reputation for quality shotguns, rifle/shotgun combos, rifles, and several handgun (M38, SIG 226, etc) designs. When the S&S single action revolvers were designed in the late 1960's, they were produced to fill the demand for showy "cowboy" guns and modest marketing prices. I recall the .357 magnum "Western Marshall" model selling for around US$90 in the early 1970's when the Colt SAA was US$250. With price differences like that, you can expect some production shortcuts to be made.
While the cosmetics of the S&S revolvers are nice, there were apparently some manufacturing shortcuts taken with the S&S sixguns that make them less than heavy-duty shooters. Specifically, heat treatment and materials. The rimfire versions used steel-lined zinc castings in the cylinders and barrels. Hammer/sear notches wore out easily, firing pins and cylinder pin bushings peened out, hands and locking bolts broke, from sights came loose, and the action screws loosened constantly. Now, certainly, many of these symptoms are characteristic of the Colt SAA design, but after seeing so many Sauer revolvers that had ALL of these characteristics, I can honestly say that they are NOT the equal of Colt, Ruger, Freedom Arms, or other domestic SAA type revolvers.
John