You can argue stats till you're blue in the face but I would'nt take the wife and kids across water at night in a single engined anything. Having said that, a turbo prop at fl 200 has a lot more options, especially with gps nav kit and a decent autopilot, when the front end does go quiet. It might work for night freight along specific routes. Funny how the RAF gets to fly single engine turbines all the time and they never break down do they?