We bought the 41' (435) last year and I can tell you we could not be happier. We're on the west coast right now but eventually plan to move it to the east and Bahamas will likely be part of the plan. The jump from florida to Grand Bahama is only about 70 nmi, so could easily be made in daylight at hull speed (about 9 knots). Plus if you decide you want to beat some weather or get there a bit faster, that tug can be pushed up to probably 18 kts. American Tugs are (IMHO) incredibly sturdy and well built. Everything is accessible and every wire, hose, valve, pump, etc is clearly labeled and properly laid in. The factory is small enough that when you have questions you can simply call or email one of the Tomco engineers and they will answer your questions.
If you're seriously considering one, it might be a worthwhile trip to visit the factory in La Conner, Washington. They're welcoming to visitors and also sometimes have an open house event in the spring.