I agree with all of the advice everyone has already given. I have researched pretty much all of the Exo Terra incubators and Zoo Med Reptibator incubators you will find on Amazon and pretty much all of them have a lot of bad reviews. Building your own is very simple and low cost. You can use anything from something as small and simple as a styrofoam cooler to something as large as a refrigerator. Myself, I have been on the lookout for an old broken wine/beverage cooler, because I like the idea of having a glass door on the front. As others have advised, a reliable and accurate thermostat should be your most important consideration, along with a fan for good air circulation. There are tons of videos on Youtube that show you how to make many different kinds of incubators...