I had a very early Colt, when they were new, and currently, I have a RIA Ultra 6" single stack, and just bought a Tisas D-10 back in December. Both of them are good shooters, though I had to do a trigger job on the Tisas. The RIA came with an excellent trigger. They are fun to shoot, and maybe I'll pot a doe with one this fall. We'll see. Other than the rather horrible trigger in the D-10, I've done nothing except swap triggers and mainspring housings (I prefer long, solid triggers and arched housings). I haven't even changed the grips on them. The D-10 even has a checkered frontstrap, which is pretty special on a gun I paid less than $600 for.