Aztec, but get a good one and look after it. Rock solid in cloud, almost the same payload as a Navajo, built like a tank and handles grass, mud and gravel no problem. lowest fatal accident record of any twin. bit noisy in the cabin - get anr headsets for passengers and yourselves.
Get a good E model, and stay clear of the turbo ones.
500 m wet grass, 6 up into st Mary's scilly isles, Stuttgart/London night IFR 6 up...takes it all in its stride. Bit thirsty. Nip over to alderney with those big fat longrange tanks and fill her up!