I use one of the cylinder stoves pictured above. I love it. It works better if it is really cold because then you can load it up full of wood, go to sleep and wake up in the morning and it still has coals and tent isn't freezing. In mild cool weather, its too hot to load it full of wood when you go to bed so then the fire goes out and it is cold in the morning. Propane stove and such ar enice but there is nothing like the reliability of a wood stove. You might run out of propane or have a heater quit. You can always find some branches for a stove.
They sell the Cylinder stoves in different sizes so as long as you get the one that fits your tent, you should be fine. Then it just takes getting used to how to bank you fire when you got to bed.
