Hey there,
We are in the looking mode as well and definately leaning toward an
Island Packet as well. We have friends who own a 350 Island Packet that we have spent a considerable amount of time aboard, including a week on the east coast before they shipped her back to
Minnesota.
There is ample
storage on both the 350 and the 380. Both
boats are roomy enough to accomodate both you and your wife, as well as guests when necessary. We routinely had 3 couples aboard the 350 for a weekend or a full week without any problems. Sailing characteristics should be fairly similar.
The only real differences that may have an impact between these 2 boats for the purpose that you describe are:
1. Tankage - I would not consider the tankage (at least for my purposes) to be adequate on the 350 if I were sailing in the caribbean.
2. Separate
shower area that can be sectioned off on the 380.
If these issues are issues for you that can be reconciled against the increase in cost in the 380, well that would be the decision point, from my perspective.
I guess with the lower cost of a 350, you could certainly add a
watermaker and mitigate the smaller tankage on that boat.