I use the SKY branded version of this discharger and am happy with it. It was $55 on the bay. I am not advanced enough to go through the procedure of discharging between rounds at the track but it has proved to be a quick and efficient method of putting everything in storage mode while I am doing other bench chores. I have not yet come to grips with dumping batteries without having a balance hook up like you do when you charge so I plug in the little battery/servo tester to compare finish discharge voltages between the two devices. So far so good.