Cheap eBay brushless aluminium gimbal

The GoPro Hero 3+ Silver edition is capable of taking some pretty good quality aerial footage when attached to the underneath of the Blade 350 QX. The only problem being that as the camera is directly mounted to the quadcopter, every directional input, vibration or judder ruins the fluidity of the footage. Birds don't seem to have this problem, as their heads manage to stay in one place when they are being moved around:

Having seen more 'professional' looking footage that was shot with the aid of a quadcopter on Redbull TV and the GoPro channel on YouTube, I was keen to emulate this. My research into gimbals began. Gimbals are capable of reacting hundreds of times per second to ensure the camera stays steady and smooth. This should mean that even if the quadcopter is being blown around in the wind, the brushless motors in the gimbal will counter any input detected so the camera remains unaffected. Check out this demonstration of how straight the gimbal keeps the GoPro as the quadcopter is jerked around: