The torque dog is a good box. Performance is very similar to the Edge EZ or the Van Aaken Smartbox V5. The V5 can also be adjustable when you add the optional switch. The EZ is adjustable by changing internal jumpers. The main difference is price. The torque dog is quite a bit higher. Torque dog MSRP $629, EZ MSRP $549, V5 MSRP $499 w/switch. They all work excellent. Hope this helps you.