Cessna P210 Centurion

To gain sizable amounts of speed and efficiency, you'll generally have to fly in the mid to upper teens and higher. And to do that, you'll have to make a choice: stick an oxygen hose (or mask) in your nose or pay for the convenience of pressurization. Due to market demand and high production costs, the choices for single-engine models are limited to Cessnas P210 and the Piper Malibu.Pressurizing anything, let alone a single, is fraught with difficulty. Part of it comes in the form of mechanical woes-the engines are short-lived, often don't make it to TBO and they cost a lot to overhaul. Pressurization adds another complex system to maintain and operate. Part of it comes in mundane problems: separate, unpressurized baggage compartments and the need to fit everything that goes into the cabin through the pilots door. Then, of course, there's the extra premium in first place: as of winter 2015, a 1981 P210 costs about $25,000 more than a 1981 T210.