Just a bit of lateral thinking / dark horse:
[quote]
Given this mission as an example what would people recommend.
Time is money
Efficiency is key
Low initial outlay is a bonus.
750nm Sector preference for single leg, no fuel stop.
4-5 Pax @ 100KG + 10KG bag. + Pilot.
Some might laugh and scoff at it but the C550 might suit......if want single driver S2 or 2SP.
Flew a C550 for a while with the nosewheel spin up kit. Good performance and comfortable. Was a great introduction to jets for me - simple and honest machine.
Imagine devil is in the detail - access to good maintenance, utilisation rate, owners "emotional" wishes, etc.
If it was me - I would be crunching numbers on all the ones you have mentioned as well as this. Numbers may or may not stack up.
Good luck