What am I missing here. They look the same size almost. Why is one rated so much higher for engine size? I am going to buy one of these this week and wonder which is going to be better for 3d? I flew my buddies twist 60 today with a saito 100 and a 16x4w and it was a riot. Hovered at 1/2 stick or a touch more. Pull out was abrupt and plentiful. How is this 150 with 3d performance?

Kevin