Have you looked at a C210/T210 (Centurion) ?
Faster than the Seneca and Cherokee, and within a knat's chuff of being as fast as the Aztec (even though it's a single), 6 seats, fabulous load carrying ability and, I would hazard a guess, better short field performance than any of the above. Plus two doors, which always helps!
Excellent long range / big load tourer.
FF
