If you have a woman that’s going to stay with you, I recommend a water heater upgrade, preferably tankless. Never-ending hot water. Saves a bit on propane as well if your current water heater is gas.
I haven’t made the jump yet myself, but it’s definitely on the list.
I’ve been looking at the tankless hot water, many have made it work with retrofitting but there appear to be challenges in getting it to work right. Navy showers, cutting it on and off to save water and propane, causes problems with the sensors and you get ice water because it thinks it’s supposed to shut off when you turn off the shower head.