Ithought when Ibought my 9CAIthought I was set for life. Then Ibought a cheap little ARF - a Goldgerg Hot Stik 40. No retracts, no choke or engine kill. Just a dumb little 3-D stik &glow engine. . . but it had seperate elevator halfs and two-piece ailerons. So there's six servos just for the elevator and ailerons. When Istarted to play with CROW/Butterfly using flaperons/spoilerons Ihad a plug in every port in the 8 channel receiver and ended up with five mixes. Suddenly that TM-8 module for the 9Cfelt pretty tight. Ialso like things like seperate low idle and engine kill switches. Nice to have the options of having unused actuators rather than needing one and being all booked up.