Let's face it . Have you measured that Apc? Now I fly both and others and have been flying a long time. I've heard this and heard this. Yes You get more Rpm on your APC but do you readly think that last 1/4 to 3/8's of an inch moves much air. Try different props they have different useages. I do like the more bite APC's have close to the hub. Some people just have to follow without thinking for themselves.[:@]