I'm not gonna bash on the Cimarron's, they make some dandy lookin guns but they are what they are, a Colt clone. In the 50's Ruger designed and built an SA that was better than any Colt to that date in the function, strength and durability departments, Do you think a clone is gonna better it?
It really depends on what you want or need. If you're stuck on wanting a true Colt type action just like John Wayne had then get a Cimarron. If you're lookin for the best SA handgun than the Ruger is easily the better choice.