So I just bought a phantom 2, brushless gimbal 4 and attached a hero 4 go pro black. cost in total about $2700. It flew fine for about 10 times, when the battery got to 20% it would take itself over and return within 30 feet of original gps starting point. Not great but at least somewhat close. Within two weeks of owning this thing I was bringing it in for a landing, it was 20 feet from me, it takes itself over and flies UP AND AWAY !!! flies 300 feet out over a lake and decends ever so slowly and drowns itself !!!! I totally panic, strip down and swim out into a FREEZING LAKE trying to save it, $2700 !!!!!! I almost froze to death and still no luck before it sank. I rented scuba gear and hired a diver but no luck, deep dark lake with some current at bottom due to inflows. DJI sent me paper work, I supplied all info, receipts for dive gear and diver, pictures of the recovery, witness' and anything else they requested. DJI RESPOSE - buy another one at a discounted price !!!! WTF !! is this company for real ??? I am TOTALLY blown away by the response and the complete unprofessionalism of this company and their shitity products and the absolute WASTE OF MONEY!! If your reading this DO NOT BUY A DJI !!!!