I don't think this is a review, more of a comparison between a Spark and a P3S. And it's like comparing apples and oranges. Nice write-up though. One thing to point out are your comments on the wifi connection and signal dropout. DJI has just released an updated GO4 app and firmware and OTG is now fully supported. Tested it last night and video image remained crystal clear to 8000' with no loss of signal.