KASE is not a worry for us as we would take another one our airframes in there.
The boss went through the 550 and 650 at the NBAA show recently.
He said there is no comparison. The 650 was significantly better than the 550.
Height of entrance, cabin height and width, interior quality, shower, galley options, etc.
All I want to know is the thing gonna have great dispatch reliability and easy to fix when it breaks.