Can somebody explain to me the what upgrading my controller will do. Will this help with longer flying range? By that I mean the controller will be able to control the Phantom for longer flying distances. If getting a better controller is a good idea, what's a good one to get? I have tried to research things a bit, but I get so much stuff that it's hard to deceipher it all. I do like how the DJI controller does the "return to center" thing. Do they all do this? Thanks for any and all input.