Hitec X2 is not bad. Around 7 amps per channel with no power supply. The most expensive but best would be an Icharger but that gets expensive quick (500+ for the charger, power supply, discharger, charge leads...) The 406Duo will charge at 40 amps and discharge and 40 amps. Displays IR ratings for each cell. Kind of extreme but it's the best of the best.