I agree.
If anyone only requires heating or cooling, not both I would recommend the following:
http://www.ebay.com.au/itm/220V-Digital-Reptile-Temperature-Controller-CE-Reptile-Pets-Heat-Emitter-Sensor-/221008887183?pt=AU_Pet_Supplies&hash=item337527fd8f
It is cheap, requires no wiring and works.