Noise
Hm dont think so, had a 520 and a 500e both start up the other day, as soon as the e model wound up the total noise from the notar had been drowned out by the e's tail rotor !!
Will the blades = more auw ? Presumably that will depend upon the tail rotor to provide the anti torqe. Would be more than happy not to have corrosion and erosion strip problems though. just bought a new set of blades from htc
Mind you would prefer another operator to try them first !!!