I was watching this video of a 3D printed VTOL airframe that they post on their sales page. It seems like it's unstable in flight with a lot of correction and wobbling. Maybe I just don't know what I'm looking at, I've only really had anything to do with quads but I want a long-flight autonomous unit for crop scouting, that can land like a quad and hover for pictures in certain spots when checking cows and water.
https://flightory.com/product/super-stingray-vtol/
Is this a problem with the airframe, the pilot, or am I just being overly critical? I don't care about the cost of the print files, I just don't want to spend a pile of time printing something and not get a useful product at the end.
Perhaps someone has a better suggestion for a reasonably priced airframe (prebuilt or printed) that can take a Pixhawk or other Ardupilot FC and give me 30-60 minutes of flight and 20km of range?