I can vouch for MaxAmps. Have an arsenal of both MaxAmps and Turnigy Nano-Techs, and the former just blows the competition away. The power to weight ratio on the MaxAmps are just fenomenal. You can run far less mAh and still have the same power delivery, which means you save a whole lot of weight. Less weight is higher performance. I love mine. Not to say the Nano-Techs are bad, they're just not in the same league. If I treat the Nano-Techs the way I treat my MaxAmps, they start to inflate.