Which 6-8 seat turboprop?
If you are in the market for aircraft of this vintage/value, you've really got to minimise the risk of it all going pear-shaped. Whther Cheyenne, Conquest, Turbo Commander or King Air, think about overal population of the type in your own country and Europe-wide. How maintenance shops have proper experiance on type on your doorstep, where can you and spare pilots get trained on tyoe, what's spares availability like etc.? Some hold there value better than others whilst the likes of the King Air have so many pilots around rated on type that you'll always find a back up crew member if colleagues are on leave or off sick etc. Without any doubt whatsoever, the King Air family represent the lowest risk of purchase but if you are based at an airfield where one of the other types are already operated and supported, then the risk of ownership is mitigated. Be wary of going for a TPE-engined ship rather than a PT6 engined aircraft. Again, engine fleet size is as important as airframe fleet size in one's region of operation. Don't get sold on fantastic performance figures, just look for reliability, ease of access to pilots, support and fleet size. The Cheyenne is fine if you have local support, in which case it will prove cheaper to operate than the King Air and cheaper to buy. But don't touch anything where you are the only game in town for 100 miles. In some cases the configuration or performance capabilities may win the day be be very careful - you can lose your shirt on a 1980s 'cream puff' when your stuck on the ground looking world-wide for that essential widget which can only be found in a scrap yard in Arizona.