Long story short: Raw sewage sprayed into the basement and one area it hit had ALL of the space heaters for my place. I find them sometimes at my job when people move out of their homes, so I had a nice collection.
Anyways, I had the oil-filled radiator type, ceramic disk with blower, a safety one for the kid's room (thin element, large shell with a blower), etc.
Now I have to replace them for at least 2 rooms this winter, which type is the most effecient at heating a room?