Okay, here is what I decided on after some research. I went with a dry fire mag and the Mantis X10 Elite training system. The Mantis is supposed to work both dry and live fire and be able to show you what you are doing on both, so I spent a bit more to buy it. Here is the video that convinced me to get it.
Mantis X is great. I've shot handguns for over forty years and have always been a pretty good shot. With age and ammo prices I had not been shooting much and my targets were showing it. I used the Mantis for a few months and noticed a remarkable improvement. I was at an indoor range last year and a guy that works there saw my target. He said, "I need to take you to Fair where they have you shoot out the X for a prize."