Adam
With personal experience on both the P337 and the P Aerostar I can't share your enthusiasms. Both are just maintenance nightmares, especially the Aerostar. Any airplane where you first have to remove the whole engine to do many cylinder exhaust or turbocharger repairs is going to run up stupendous shop bills......
Best bang for the buck IMHO is the late model Cessna 414A's. That is the ones without the tip tanks. Fast comfortable, simple direct drive engines and much more maintenance friendly then the electric gear tip tank early models.
Last edited by Big Pistons Forever; 22nd Jul 2012 at 03:05.