hello, i have an aerobird and a firebird II, now i can fly these plane great... what im wondering is, how are the GWS airplanes speed compared to these 2 planes? i was thinking about getting either a GWS P-51 or a GWS Zero.... do these GWS planes fly about the same speed as and Aerobird slower or faster? will i need a bigger field to fly it in or the same area? thanks guys..