These are two different helis.. the CP2 is as small as a DF4 for the 35 its a size 400 heli.. the only thing that is not good with the 35 is that it keeps on stripping the tail gear. its not really a good choice since you will be always replacing the gear.. for the CP2 it does have more tolerance in crashes.. but its a heli that a little too unstable since its light and small.. its harder to fly outside with wind.. another is the tail motor which gets burned easily.. upgrade if a DD will kinda lengthen the motor life...