As long as you throw it hard enough, any mech will hit hard, but generaly speaking, the heavier the better.
As far as low voltage drop and performance, IMO you can't beat a copper Stingray, either the black or the red. As stated many times, you need a good high amp battery that will handle the load, if not, your voltage under load will drop a good bit and/or you step into the danger zone of the battery's safety limits and risk venting, and your build.
As far as low voltage drop and performance, IMO you can't beat a copper Stingray, either the black or the red. As stated many times, you need a good high amp battery that will handle the load, if not, your voltage under load will drop a good bit and/or you step into the danger zone of the battery's safety limits and risk venting, and your build.