I just purchased the new vision 2+ and I am seeing videos of horror stories of these machines just flying off. Does this happen frequently and if so what is the most diligent thing to do in order to prevent it? Although I enjoy watching the long distant videos of others I think I am going to practice the line of sight flying for quite some time. I know to some $1,400.00 (with a few accessories of course) is not a lot of money but to me it is a sizable chunk. I mean I had periods prior to making the decision to buy one of hearing my late grandfathers voice saying, "Son, is that a need or a want?" I ultimately decided to do because we only live once and we have no guarantees for tomorrow, but if I was standing their watching my phantom just fly away I would become physically ill. LOL Can someone shed some light on these flyoffs and how to prevent them or recognize the conditions that could cause one? Thanks so much...........