My sense is that the diver that was interested in all this has already gone, but for the record I will give our opinion.
We believe the wall at Grand Turk top the other two destinations overall (OK I was at Cayman Brac not LC but dove BBW), it would be a toss up though for the outer cayes off Belize, they were spectacular but expensive to stay or to dive out of Ambergris Caye.
Just booked our fourth trip to GT with Oasis Divers (we do it every other year because we have SO much fun, the people are awesome, and the diving is SO terrific, and the whales..........)
Will be going to the galloping pogos in October, so this will be the warm relaxing trip as a prelude!
Susan