Hi Steve in Ann Arbor Michigan. This is my first store bought ready to fly machine of this type. I do have about 5 years experience building and flying multi-rotors and 3D Helicopters. Bought this mainly due to the great sale price and to try out my first GPS assisted model. Everything I have flown and built up to this point have been non GPS assist. Flying GPS assist sure is freaky and will take me some time to get used to. Will have to test RTH in a big open space to see how it really works. Tried it quickly but the bird made a quick 20 ft. jump to the North. So I just stopped that and flew it back manually. I was careful to calibrate it properly and fly it in acro mode first to test everything before venturing into FLY mode.. Yeah I'm backwards to most probably Noticed in Acro mode things are NOT perfect. seems slightly laggy (probably due to WiFi control versus *real* RC type protocol with less latency. Also Yaw Rate is incredibly terribly slow with full stick deflections even with "performance" adjustment all the way up to fastest. Every time I restart a new flight performance setting goes back to full slow setting Why? Also here's a link to my maiden flight video.