I don't think anything you are going to carry and shoot on a regular basis will maintain or increase in value. I obviously didn't consider resale value when I bought my 4 handguns chambered in 9MM as they are S&W, Ria, Taurus and SCCY. They are affordable guns that have never malfunctioned and accurate. Buy what you like to shoot at a good price and don't worry about it. Anyway, whatever you buy may not be desirable in 10 years due to the popularity or if there is a recall or bad press on it.