if you've got the NAZA flight control system the easiest way to get great results is to just go with the DJI H4-3D. if you want to save some money, the Tarot GoPro gimbals also happen to do a very nice job, i've go tthe 2-D Tarot gimbal on my Iris+. The H4-3D works really well too, hard decision you've got to make!