Raj,
If "props are for boats" as you so eloquently stated (you probably stayed up all night making up that little quip - how original), then why are you blowing the KingAir like it's the end all to be all of aviation? Too bad you can't be happy for us that we've found something that works for us and that our customers are happy with.
I have no problem with Avantair doing well but I don't by any means think that a Piaggio is a better aircraft than a King Air. I have time in all the above King Airs except the 350. King Air is a solid airplane and works well for its mission in aviation.