Most of the above named twins would be a good choice, with one exception : The Aerostar !
Do your self a favor, and stay away from it !

I have worked in GA maintenance for approx. 15 years, some of it on aerostars ( unfortunately ), and they are a nightmare, maintenance wise.

Also, I would stay away from the Beech Duke, it is a very nice airplane, but the engines are very expensive to maintain, and rarely make their TBO.

Best choice for you, IMHO, would be the Cessna 310, not as sexy as the Beech Baron, but also not as pricey, and it's a good, solid aircraft, easy to maintain, and parts are plentiful.