I have been very happy with my air 2s and have taken it to exciting places like iceland and the Philippines. On this recent canoe trip, unfortunately the boat capsized carrying my drone, the controller and the batteries. Luckilly I have a valid DJI express warranty, which expires next year. Both drone and controller are not functioning so I intend to go ahead and make use of the warranty. The details of the warranty indicate that I can extend the warranty for another year so as long as I still have 1 more replaceable option, which I have. After I send the unit for replacement, I would like to purchase another year of warranty. Any comments?