The Baron 58 will probably resell more easily in the future. That pax door makes it slightly more versatile as a charter aircraft. I don't know though whether you'd find a dual control 58. I suspect all of them were made with the throw over yoke but as your family get older they might want to fly as well.
As a pilot aircraft I think Barons are unbeatable with two possible thoughts.
I've always rather wanted a Duke and there have been one or two good ones available in South Africa recently. That though is not a cheap option. The other consideration, especially if you fly in hot climates or want a good view might be the Rockwell Commanded 580. That's is even easier to fly well than the Baron.
These have cropped up from time to time on South Africa. Eskom used to have a fleet of them. There may also be some knocking around in the Caribbean but corrosion is always a problem on a sea side aircraft.