Hi Cedric
Good info. Just one small correction: I believe the Latitude is also capable of landing in St. Tropez (La Mole) even under commercial rules (dry).
Also, I wouldn't expect transatlantic range from a midsize biz jet.
Overall I agree the 450/500 appear to be fantastic airplanes.
The Latitude certainly isn't easy in gusty conditions: No FBW, no hydraulic primary flight controls and a big wing (low wing loading). Other than that and the fact that it is not exactly fast,a really good aircraft as well, though.