I've got some RBI racks and can highly recommend Reptile Basics as well. If you are concerned about safety, I'd buy two thermostats. One being proportional and one an off/on. I use VE-100's as my backup and VE-200's as primary. When a proportional thermostat fails, they tend to fail wide open. When an on/off thermostat fails, it tends to fail in the off position. At least, that is what I've read. I feel much safer with a back up thermostat on all of my racks.