I have herpstats and rancos. The herpstats are better but more expensive. My rancos work fine and keep temps very well. The ones that I have, have been in use for 8 years. I have never had an issue with them. I paid 65 each for them and bought them prewired. The only thing I wouldn't recommend them for is an incubator.
Sent from my EVO using Tapatalk