I spent a week on the Cayman Aggressor in June. I had a great time and would highly recommend it.
Grand Cayman is easy to get to.
The dive sites are magnificant; a nice mix of reefs and wrecks.
The food is great. The crew is phenominal.
12 dive sites; 25 dives; 22+ hours underwater. It was a great week.
Eat ... Sleep ... Dive. that says it all; don’t plan on much else.