I kinda have a stupid question here. Im a pure avid nitro builder/flyer and i picked me up one the of the tributes to bash around in the backyard. Anyway. Is there a differance in the e-flite 370 vs the 400? I bought the 400 thinking it will be more power for my 20C thunderpower li-po's. Dont really know. But I think the KV is lower on the 400. Can someone explain?