The 80 would be my recommendation. I you really want to put a 100 on there between the DA and 3W, I would go with the 3W since it has a slight power edge over the DA. If you want THE 100 for the H9 planes, the BME 110 is the way to go. Same weight as the ZDZ 80 and more power than the DA-100. Thie BME will work great on many much larger airplanes as well. Good luck.