Jurgen, disagreement is the spice of life, so by all means, disagree, especially if I might learn something from it!
What bad aerodynamic characteristic does the MJ have? I know it likes to torque roll left under power, and stall the air over the top of the LE if too much up elevator is applied, but the first problem will go away with no motor torque, and the second should go away as the wing loading of a slope version will be a lot lower??
I have no doubt the Twin-Jet would be more fun (bigger and easier to see, for one), but the MJ was on sale recently for $34... that's a whole lot less $$$ than the Twin-Jet, hence my interest.