Hey guys, looking for a thermostat for my rack system with flexwatt. Currently i'm using herpstat2 and hydrofarm thermostats on my glass tanks to control ambient air and UTH's. What's the best type of thermostat for a rack system: on/off, pulse proportional, dim proportional??? I know a lot of people like the Helix DBS-1000 but i couldn't find on their website whether it's on/off, pulse prop, or dim prop.??? I've also been told to use the zoo med 500r or zilla. Whats the best Thermostat for my rack setup??? I have a 4 level rack 28qt rack with 4" flexwatt belly heat on each level.