For fuel, anything with a higher nitro content than 10% is a waste of money. It will just make yor engine run hotter with out seeing much performance increase. Ask at the hobby store where the RC clubs are. The mimimal cost of joining a club will be saved several times over when an instuctor saves your plane from crashing. The RC club may be able to tell you who has a trainer for sale, cheap. I had a Zero and its more of 3d type plane. It was very fast, responsive, handled the winds well and a blast to fly. It also like to land at about 20 mph which means it can't be used as a trainer!