I just look at how really good, world-class shooters train, and the use of UTMs (in the way you're describing) and MantisX is nil. (Did I mention I own a MantisX?) So, yeah, you do you. Personally, I don't see what UTMs do better than 22s for what you're describing, except that 22s are waaaay cheaper.Well to each his own. I will continue to use UTM products along with dry fire and Mantis X products. If you don't find them useful....cool. Doesn't mean I don't and the people I have taught using them don't either.