We purchased 2 storm racing drones with GPS last week. Shipping was fast everything came ready to go. Read all the instructions carefully watched numerous videos on proper start up and set up. One of the drones worked excellent the other had some issues with the gps. First flight it flew ok then decided to take on a mind of its own. It went up about 50 feet and would not come back so I shut down the remote to initiate the return home feature. Which worked excellent on the 1st drone. Not this one. The drone full throttled out of sight and disappeared. $700 down the drain. Customer service is slow to respond and keep going back and forth on what went wrong. It was completely a gps malfunction and not an operator error. We will continue to post bad reviews until this issue is fixed. Not only did the drone take off and disappear but it flew away into a neighborhood somewhere and could have injured someone.