Smaller glow planes are fun but need a light touch on the controls. The smaller wingspan means that it only takes a second or less for the plane to completly turn upside down. This can be fun for the experienced but more than a handful for a new pilot.Larger planes are easier to see, can land slower, and are more forgiving while learning. If you are serious about learning how to fly glow powered planes, find a 40 sized trainer to go with your engine. A large easy to fly 40 sized trainer is the SIG LT40. A good advanced trainer is called the Avistar. Have fun!