the 6 and the 7c do not have the same veritility in programming ability as the 9c and the 9c is in the 400 dollar range at tower hobbies. the 6exa lasted me 2 models until it didn't have the abilities I needed to fly 3d profile airplanes with 3 different rates and the ability to change rates on rudder aillerons and elevator where as the 6 exa would only do elevator and aielerons