I have both Colts and S&W. For plinking, I would go for a S&W 18 ,4 inch barrel ,which you can find used for less than 1/2 the price of a Colt Diamondback. It is lighter than a Trooper Mark 3. which is overly heavy for a 22. In a 6 incher it is a toss up between a S&W 17 or a Colt Officers Model Match. The Colts are harder to find and more expensive.