I have both, and for a small job like a hot water heater install, you would see little difference. If you are buying a kit though, the MAPP would be the way to go, if you already have propane, you will be just fine as well.If you decide to sweat the fittings do not use a propane torch. Spend a couple of more dollars and get a Mapp Gas Torch. Will save lots of time and hassle.

