The DP holds a line much better, horizontal and verticle. It is much easier to do pattern work with. It flys smoother and tracks better all the way around. It also does better spins... gorgeous upright and inverted spins... it even does a nice knife edge spin. It is easier to land, handles wind better....etc etc etc. Dave Patrick learned a lot from his Goldberg Ultimate design and improved on it with his DPM design. Do I sound like I love this plane? I absolutey adore it!!