Many many years ago I swapped out an lpg boiler for a glass door coke fired parkray room heater. I had a calor bulk tank which was on a regular topup visit. Money was worth more in those days and I had a decent income but over four years the tank rental had doubled and the price of liquid gas trebled. The parkray required "driving" but it provided heat 24/7 and had a much reduced running cost supplemented with wood from various sources.
A few houses and years later I installed an oil (kerosene) fired boiler to replace a solid fuel unit. This was a really beneficial move as it permitted seasonal purchasing. (I worked for the local Shell distributor heating department at the time). It was fully controllable and comfortable to live with. Despite often hearing people describe oil boilers as smelly I can assure everyone a correctly installed and maintained oil boiler definitely is not. Currently I have a heat pump which was installed by others when my oil boiler finally gave up the ghost and my fitness levels had faded. It works but it's not a patch on the oil boiler in terms of household satisfaction. Given a free hand and a clean sheet I'd have no hesitation in opting for a kerosene fuelled heating system with a large tank for living in a remote spot. Add a small standby generator to power the boiler and circulation pump plus the house lights and have an emergency camping stove with a few gas cartridges and extended power outages fade to become a minor irritation.