I would go with the Hitec's, IMO they make the best servo's on the market. I have the 645's and the 485's in my H9 twist 60 and they work flawlessly, giving me tons of authority. Even though the digital's are more money, you should consider them if you want to 3D since they're: quicker, stronger, and have their max torque through out the whole range of the servo.