All the above have good points, and this is a really good GA subject.
Having done both Airline 2 crew, airtaxi 2 and single crew and Bizjet/ Turboprop 2 and sinlecrew, each has their own challenges etc, etc, but i can`t help agreeing that two engines are better than one, and two pliots are.............................., as long as its not the boss, or another experienced skipper, but that you both become part of a well trained crew.