Im looking to get my rack all set up soon and I'm going to be ordering my flexwatt. My question is, I've looked at Helix and Herpstat and I haven't made up my mind, I know I want to go with one that has night drop, but I was curious as to which most people would recommend and would love to hear peoples experiences. Also I will end up wanting to build more racks and am very interested in one that will support more than one rack.