I've started to put together my single tier all grain brewery, it is loosely based off of a Brutus Ten set up but will have a HERMS coil in the HLT, the system will be heated by two LP burners. The stand will be constructed using super strut so no welding necessary. I'm am going to control the gas valve with a PID, so the big question I have is what type of PID should I use, there are TONS of options, what PIDs should I stay away from? What thermocouples are the best to use? The brewery will only have one auto burner, two pumps, three keegles, one each for the HLT, MLT, and BK.