It's always interesting to see the usual naysayers busting on the Buddy Heaters, even though they don't use them. We go through 10 or 12 one lb canisters every winter with our Buddy Heater in our sticks and bricks living room. No smell. No CO.
There's no reason to bring a 20 or 30 lb propane tank into your living space. Why do people even entertain that?
For an RV, given the choice, I would go with the Plat Cat first, Oly Wave second, then the Buddy. I don't have room for the first two in my current trailer, so the Buddy it is.