I just got a Herpstat Basic for my first BP. It was only 99 bucks, and it's doing great for me. If you are sure you'll be hooking up 100% identical heat sources, you'd be able to use the Basic with a power strip/surge protector. If you'll be using different wattage/size heat sources then you'd need to move up to something like the Herpstat 2 I think.