Just got a Holy Stone HS-720, to replace my first generation DJI Phantom after it glitched and flew itself into lake michigan, and not close to shore. It's a nice drone, actually ordered it by mistake on amazon, was looking at the mavic comparing the two of them, and accidently ordered the Holy Stone one.... got it within a couple hours so that was a good thing, and it is a very nice drone. Wondering about compass calibrations per flight, since it only showed the flashing indicator one time and seems to fly ok in a different location than where I set it up at, but before I try to do any flying near the lake or river in downtown Chicago.... want to be sure. More familiar with the first generation Phantom.