I got the DeLonghi Dragon 4 1,500-Watt Electric Heater and was very impressed. I needed a heater that would heat a medium size room without making it so hot you can't sleep and this heater worked great. The digital controls allow you to set it to the temp you want and it worked perfect. The room I would say is about 300 sq feet and it never got too cold or too hot for me. Love this heater!