John,

I have one opinion for you but I hope you use what works best for you. In order to be competitive, my planes need to be able to go about 85 miles per hour. Turn in about 20 feet and be tough enough to dive into the ground with minimal damage. All these thing we try to design in when we build. As for the durability, it is not always strength that survives a mid-air. Sometimes the ability of the wing to move out of the way as well as absorb the impact will let you "fly out". I have my planes set so that you can push the wing back almost to the tail and it will spring back in place. Coro seems to be the toughest for the control surfaces, and as far as the tank size. The plane needs to be able to go full throttle for at least 8 minutes.

Bob