Yeah, the 690's are rockets, I've heard. Especially with the dash 10 engines. I'd love to have a turbine one day. The earlier 690's had the dash 5 engines and I can't exactly remember what it was, but they have a pretty limited TBO for a turbine or something. There's even a 680V, which was the first turbine they released in the mid 60's. They can be had for not much money, but once again the engines are slightly problematic.