Others may laugh, but the stove I'd reach for in that situation is my old Coleman single-burner propane stove.
It's hot, quick to light and relight, and so simple that anyone could use it.
The fuel lasts more-or-less forever, as far as I can tell. It's easy to visually inspect the seal to guard against
I think the small bottles propane units are fine for power outage home use. White gas, isopropane, hexamine and alcohol all have a place. But for a simple and reliable home kit it is hard to go wrong with a stock of one pound bottles and a dead simple single-burner Coleman propane stove that sells for $16. A child, with minimum training, could handle refueling and operation.
A single burner stove, $16; single-mantle lantern, $17 ;small catalytic heater, $70; and a dozen one pound bottles of propane amounts to a nice home kit that covers all the bases.
I like the small bottles and a single burner stove precisely because it reinforces the idea that this is an emergency and you need to act accordingly. Make things too convenient and comfortable and people will naturally tend to be more profligate in resource use. One of the reasons I'm against large automatic transfer generators is that they allow a 'business as usual' attitude when strict rationing would be wiser.
The hose and fittings to adapt small propane units to bulk bottles are okay, and they add adaptability, but they don't work on the most compact units because the one-pound bottle is part of their structure and IMO a twenty pound tank is more of a risk and far less easily handled by smaller, weaker people than the smaller bottles.
There are fittings that allow you to refill the one-pound bottles from a bulk tank but using them can violate several seldom enforced laws and can be a slightly risky process. People go that way and have few problems but they are on their own.