I've been using the Tom Wilson jigs for 20 years or more. I got the Ron Power universal jigs for use on other guns when they came out. I've since bought the 1911 adapter for the Power jig. I have ended up using the Power jig to set the hammer hook height & the Wilson jig for the sear. I use the Wilson hammer jig to stone the engagement face of the hooks. I've seen the Marvel jigs, but don't want to spend the money unless they are substantially better than my current setup. Any thoughts on this from the smiths?