I just set up my Herpstat PRO and it is worth the money from what I can see so far. I'm using it for 4 racks and it has night-drop built in.

Only negative about it that I have seen so far is that you will need to supply 4 power cords if you are using it strictly for supplying heat to the racks. So factor in an additional $6 if you don't have any extra cords laying around.

Was wondering if anyone had any good or bad news about them that I should know about.