I actually enjoy good discussions on why or how something works. If I believe in it, I try to promote it. I don't try to stress anything unless I've already gone down every road. I think I've explained fairly well the reasons why the DC Controller is better than any other controller on the market, but the here's another angle. I don't like the design of the circuitry on Flex-a-lite, Derale or Spal. Too much amperage draw whenever the fan is on. Besides the stereo equipment, I also run a transmission cooler w/fan and when I used to run all my fans off relays, the sudden inrush of current just killed performance-and not just the stereo, but the H-4 headlights, dash lights, etc. After much consideration on switching over to a variable speed controller, I read up on DC Controls and Brian is an awesome guy to talk to. He explained how his system differs from everybody else and he plans to attend Sema (or is thinking about it anyway...) to demonstrate his product. I'm merely a distributor for him but after using several of his controllers myself, I can attest to the accuracy of the controller. And, he offers a lifetime warranty! The heat-sink housing features 3X the amount of nitrogen of normal epoxies, making this type a "self-extinguishing" epoxy, meaning if for some reason it ever got a short, it would instantly be snuffed out. The wire harness itself ranks higher in heat resistance that new automobile standards and has been tested (the whole unit) to withstand 400 degrees of direct heat with no drop in voltage....this was for 24 hours straight with no problems so it's safe to say it is very durable. You have a great fan set-up with the Ramcharger fans, I would still run them parallel instead of a two-step with AC over-ride but hey, it works. This controller was designed for HO fans to be sure but it will work on any fan-for not much more money than it costs to reliably use a relay system with a HO fan, this is a much better solution. But, everybody has their own ideas, some good, others better but as long as you can keep your motor cool, then that's the main idea anyway, right? This controller is just another option for people. -Jabin