I just got to inspect A Nitro Planes ARF for the first time last weekend. It was A 30% YAK. For the price I was impressed. What I did see was it was built so light there wasn't A lot of wood in there and what there was they used mostly light ply and some balsa. Not much of either. You see that A lot in the ARFs designed for 3-D flying. The only problem the owner has had so far with it was the landing gear block fell out after A couple of landings. Dang fine looking plane!!