Unprofessionalism
I recently purchased an airplane from Dynam. It arrived with a bad nose wheel retract. They sent me a new one reasonably quickly. On its fourth flight, the plane lost power on downwind for landing, resulting in an off-field crash landing. The fuselage broke in half and one wing was badly damaged. The battery had over half of it's capacity remaining. It was obvious the ESC failed. I sent them an email explaining what happened, requesting they make it right. They never responded to my email. I've never experienced such unprofessional behavior from a "reputable" company. I will never do business with them again.