Larry's response is much more in-depth than mine could be. It does depend on the size and location of the home - and the other appliances.
In a rural area not served by natural gas (lines), you could find yourself stuck with the propane company that furnishes the bottle. They may refill when its convenient for them. I recommend to Buyers that, when possible, they purchase their own in-ground tank. This allows them to have it refilled by a vendor of their choosing (and during the non-peak season when its less expensive).
I find that renters are dubious about gas. They don't want a second bill, even though (and I agree), gas heat seems warmer. On the other hand, if the hot water heater also is gas, they're stuck.
So, there's no 'one size fits all'.