Cessna Conquest I:

The handsome 1983 425 Conquest I in the main image sports four-blade MT propellers and a modern paint scheme.

Talk about the current market of new million-dollar piston singles and inevitably someone will argue that you could buy a twin turboprop for less. The Cessna 425 Conquest I is one of them. 

The current Aircraft Bluebook pegs a 1981 425 at $620,000 (down $200,000 from ten years ago), and for those looking to move into the world of Jet-A-burning twins, the Conquest is worth a look. The airplane has a reputation for being a relatively easy step-up turbine—if not a logical step—for eventually moving into a Cessna Citation jet.