I agree that if you're totally new to this, and have never flown anything, or don't know anything about controls, the Naza is probably better to start out with. The only exception to that is maybe if you were to buy a RTF APM quadcopter where it's already tuned, or you use all the standard parts and don't need to do any tuning. But learning to tune, and learning to fly *at the same time* is almost impossible.
Plus APM is 8 bit hardware, using Arduino interface and its old technology.
This really isn't a very valid criticism. The Apollo missions had less processing power than APM. It's not about the size of your processor, it's how you use it.
