What brand and calibers of handguns would be best to own long term from the standpoint of holding value and being easy to sell later. Simple question. Any answers?
Common duty class handguns from reputable makers. Colts, Sigs, GLocks, S&W, Ruger, etc.
These are the guns that will be in demand, and will hold value, in the future, just as they are today. If you are looking to make money, buy something else. If you are looking for something to hold value (not necessarily dollars), good quality guns do that.
Twenty years ago, you could get a good dot matrix printer or a used .38 S&W/colt, etc. revolver for a couple hundred bucks. Which one of those could still bring you a couple hundred buck (adjusted for inflation) today? Odds are it wouldn't be the printer!
Get some police trade-ins, get a couple hundred rounds per gun. Stash them away, and when you need to sell, I'd be willing to bet you get the value you paid for them back. The actual dollar number will likely be different, but the relative value will remain the same.
Other than for actual collector category guns, they don't increase in value much, but they don't lose much either. That $300 pistol bought then might be $800 today, but then gold was $800/oz and today its $2000+! Good guns keep their value. Unfortunately, the same cannot be said of our currency, currently.