In my limited experience, I've found CC helpful when going up steep rocky and rutted inclines where the constant bumping makes manual control of the throttle and brake difficult or more erratic. It lets you instead focus all attention on picking the right line and steering.CC will make you stick to nasty up and down hills. ATRAC (and MTS) require a minimum RPM to be effective. CC allows MUCH slower speeds. Granted, there are times you need to "send it", but depending on your conditions, I have found CC to have better results than manually attempting both climbs and descents. For the nominal price, TOTALLY worth it to have in your tool box. Take some time and play around with it to get to know when each can be best utilized.