While flying a couple weeks ago, I hurriedly landed then headed back to our place, only to discover that I had dropped the cable connecting the controller to my phone. I retraced my steps and found it right where I landed, but had some of the kids playing nearby picked it up, that would have been the end of my flying that weekend. So I bought two more, plus one extra battery so that I can have one in my M3 and three in my bag (that came with the Fly More Combo) or charger. I also bought a wide-angle lens and two of the faster memory chips someone recommended in response to my "slow chip" error message. I think I'm pretty much geared up at this point!