You should consider the differences in the types of guns people are mentioning. Also is this .22 wanted as a trainer for another type of gun (with more expensive ammo)? If so it should be similar in action and feel to the other gun. Rugers are generally about $300 or less unless you get fancy. The MK III is a semi automatic. It is a good gun, comes in several barrel lengths, and in plain or fancy. The Single Six gets its name from being a single-action revolver. You must cock the hammer before each shot. There are some types of target matches it cannot compete in. The Single six may be just over $300. I chose the S&W22 as a training gun for a M&P40. I am considering a Ruger Single Six for a fun gun.