Johnson Controls are also very good thermostats. I have 2 and one is running my incubator. Very little fluctuation if any. So! If you want to save a bit of money, but still get a quality digital thermostat, get a JC Tstat. They can control 1500 watts as opposed to the lower wattage that Helix/Herpstats can. I have all three, and they all work great, but for just one snake in a tub, get a Johnson Controls and some flexwatt. You can use the extra money on a scale or some hemostats, or a better digital thermometer/temp gun.