I'm building a new incubator and I'm trying to figure out the best thermostat option. It seems like the people that have used a reptile thermostat, like this one - http://www.petsolutions.com/default.aspx?ItemId=97637501&EID=97637501&SID=FROOGLE - really like them and the people that use wafer thermostats like them. Has anyone done a comparison? I'm looking for something under $30. Right now I have an incubator using a water heater thermostat that works ok but has about a 3 degree temp change and fluctuates with the room temperature a bit, so I'd like something that was a little more accurate. Also, where is the best/cheapest place you have found to buy your supplies at? Thank you for all your help!