yes, it is unmaned airial vehicles or something like that. some people will fly forever on four channels, but some people can't live without computer radios. it is all about your style of flying. you will never really know until you get into the sport more. when i first got into the sport i had no clue where i wanted to go. by the time i was nearing the completion of my training, i set my eyes on 3d. i have been aiming in that direction ever sence. i hada 6 channel comp radio. it was the 6x. nice little radio. when i got into my cap though and had duel ailerons, flaps, spoilers, airbrakes, gyros etc, the 6x couldn't keep up. i sold it and bought the 8u.