I am surprised at the comments regarding the shrouded rotor. I am sure EC will get there especially seeing that they are the masters of the fenestron? EC is one manufacturer to whom shrouded rotors are not a new concept so I bet as was said before that the eventual product will look different with different concepts but it remains impressive the short time from development to actually flying again as per the 175. You will never know what works best until you actually start flying it I guess.