Oh man thanks for the vids,  Those were exactly what I was talking about with my quad copter experiment.  I dont know if it was a motor that failed or what but she flipped when hitting the outside thermals of a controlled burn and crashed.  Basically I kinda shifted gears from a quad back to what I know in a traditional heli.  I was flying it manually using a KK controller.  My captain has been experimenting with a Parrot drone and keeps going through motors because it flips on him after fast forward flight. 

One of the reasons I am starting off with a 450 clone is that I can get the airframes for about $8 each with $5 for a set of blades on Leadershobby so I buy about 5 at a time and when I need parts I can either used a new chassis or just grab the replacement parts.  Since I am not flying 3D the composite rotor heads seem to work fine for me. they just dont survive crashes like the aluminum heads on my 250.  

 good job, very nice, i am almost done with my PVC fixed wing UAV(that is what I called it any way), will share the details and pictures later, used the thin wall PVC to keep the weight down..