We have a Vornado portable heater. We have used the little box ceramic heaters for many years. They work, but are noisy and do not do a very good job of circulating the heat. The Vornado works very well, keeps the room evenly heated, and is quiet. Some people do not like them because they move more air and are not very warm right in front of the unit (because they move more air). We purchased the TVH 500 a couple of years ago and would not use anything else. It has a thermostat that seems to be quite accurate.