i bought one a few days back.... have been reading these forms for 5 days now...50% crash, 50 almost crash, 50% they fly, ok i know that 150%......is it what?.......wrote to DJI and asked what to use, phone, table whats best, they havent written back and i am sure they wont, in they info there no real help as whats best to use or dont use....for over 550.00 theres got to be the right way and the crash way........after flying RC planes for 40 years this i thought would be cut and dry