What's the difference between ECD, ED and DP in Jinbei? Which good

MSN and DPIII have designed AC charging capacitors, which can withstand relatively high-intensity shooting, that is to say, the shooting frequency is high, and the shooting times are not easy to heat up, but the callback is slower than ECD, and the ECD callback of DC capacitor is slightly faster, but the callback is faster, the shooting is faster, and the shooting times are more. For example, shooting more than 1500 times a day may lead to overheating alarm, suspension of work and cooling.