I think that you could find many giant scale aircraft that you would not have any problems with as a 3 or 4th aircraft. Maybe even your 2nd. Not every giant scale gasser is a 3d capable aerobat. The only differance is they are bigger. Gas has a bit of a learning curve but from the beginning probably easier that glow to learn. Most of us have made the transition from glow to gas which for me took a little studying. Check this out http://www.bridiairplanes.com/hangar/bigbee.html