Pilatus PC-7 or -9, I don't think the -21 is offered to the general public. SF260 in all its reincarnations remains a side-by-side trainer while the AT6 Texan II is a ugly US copy of the PC-9. Another candidate could be the Turbo Orlik or some leftover RAF Tucano (one in private hands in the US, displayed by patty Wagstaff, I think).
As a matter of fact, Switzerland and France boast few -7 in private hands i.e. the Adecco's aerobatic display team (former Martini Team and Ecco...).
DK
