Well, im a die hard sig fan. simply put sig doesnt make shit. they know what they are doing and make great stuff, in my opinion the best stuff. that being said i am not familiar with the sig 1911 .22. However, i have a ruger MK III and have nothing but good things to say about it. They definitely have two different feels to them so i would say go with whichever one feels better in your hand and has a better trigger pull in your opinion. In reality, its hard to go wrong with either.