Best Built Boats?
I think that boats suitable for the Caribean and boats suitable for offshore are often (especially at the low end of the dollar range) two different boats.
A good boat for the Caribean is one that has plenty of space, outstanding light and ventilation, a large cockpit and a shallow draft.
A good offshore boat may (depending on the school of thought) have a much smaller cockpit, a more narrow beam (less distance to be shot across down below), fewer and smaller portlights and a deeper draft. [there are many more differences and again I stress, the above is dependent on the school of thought]. In addition, many people like an uncored hull for sailing to unknown parts as they may be less problematic and easier to repair, while some people in the Caribean praise a cored hull for its insulation.
The above descriptionis are for illustrative purposes only.
The point is that it might be important to look at your real requirement and ask the question again. Do you really need an offshore boat... or do you need a boat that will be able to cross the Stream to get to the Caribean. And... why 28-32 ft???
Hope this helps.
Best of luck.