Kevin, thanks for the "Prop" thread link! Lots of good information in that thread! I also agree that a wood prop is better on any fun fly plane simply because of the quicker throttle response. In a fun fly plane, I would rather fly a poor wood prop (Top Flite) than a heavy but efficient prop (APC).

But what REALLY caught my eye in that thread was Andrew's prop duplicator that he built to make wooden clones of APC props! WOW! APC efficiency combined with fast throttle response! Have you had a chance to test fly those samples any more? I'm also thinking that a wooden clone of an APC 15x4w would be nearly ideal for a ST 90 in a fun fly plane.