Whenever the extra cost of a site with power makes it worthwhile we use a Honeywell tower heater. It blows heat in all directions and is much more quiet than the propane heater, although not quite as powerful. The only problem is that the thermostat became goofy (on/off every half second), enough to drive you crazy at night. I modified the heater to be always ON at Max power (but still shutting down if tipped over) and now plug it into an extension cord where I inserted a regular home thermostat (for 110 V line voltage heaters). I can now set it at the desired temperature and it regulates perfectly.
Note that with the extra fee some campgrounds charge for power you can buy a lot of propane!
Keep warm!
Alain
