They should be more-or-less equally easy to fly. CCPM (Cyclic Collective Pitch Mixing) combines the movements of two or three servos to effect each control function (roll, pitch, and collective). This has the effect of spreading the load across multiple servos, usually resulting in better response. HDE is the traditional mixing where each servo is assigned to a single function. Stronger servos are needed to get the same effect as with CCPM.