I think a good description of the U818A is a little bugger that is drunk and likes to fly its way and the controller be damned.
HAHAHAHA, can it be configured any? If so Igain is probably low.
I guess that's possible, but I don't have the tech savvy to do it.
You sir need another quadcopter haha because you can never have enough :D
On a whim, I got a fixed-wing aircraft, thinking flying in one direction would be easier than steering my quadcopter. DON'T EVER THINK THAT! At least with the quad you can do an almost 90 degree turn (you know, like flying saucers do). A fixed wing just acts like a missile and hits things hard, like the side of a neighbor's car. Not a good feeling there...
After you get used to them they are easier to fly. They also handle failures better. You can loose an ESC, motor, or prop and still land it pretty easy.
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