The main thing is, is there an obvious alternative to the Cessna in the $5.5m to $6.5m (preowned) market?
The one that sticks out to me is the IAI-1125/G100 Astra. The Astra SPX has an APU, the SP was designed to use the right engine as the APU. The cabin isn't as wide, but you get better range, especially with the SPX. I don't have the numbers right in front of me, but I'd guess the Astra has better short-field performance due to leading edge slats. The brakes on the Astra are awesome; you'll never be brake energy limited.
Anyone a Hawker expert here? There's got to be a Hawker in that price range, right? The cabin is bigger than both of those.