Hi there. I have no information for you regarding the destination - but I can share some info regarding the boat. Just got back from a week aboard this boat (Bahamas) and it was fantastic. Can't say enough about the captain, crew, food, general atmosphere aboard, and the organisation. You won't go wrong and by the first day you'll feel part of it all, and will doubtless have been reduced to fits of laughter by the antics of at least one of them. Even their dive briefings can be a comedy act! They are totally professional, will really put you at ease - but you might find yourself laughing way more than you bargained.
The boat isn't exactly the last word in luxury - but as the captain told me 'you get what you pays for' !!
As a point of interest, when pressed - the crew were mostly recommending the Saba & St Kitts voyage. That's not to say the Turks isn't good or wouldn't be the best for you - but these guys opinion must be worth something.