King Air 200. If an engine goes quiet in the 200 you still have one left. In the pc-12 when your engine goes quiet its really quiet. Its happened to them in the past. Fuel controller problems. Go two engines or pass on the deal.

If you are looking in the used market, why not try for a 300 and get the bigger engines for better speed.

In any event you cant really go wrong with a beech.