I was on the T&C Aggressor in April 2007. I have never been on the Explorer so cannot comment on that boat. The Aggressor was fantastic. It is a very comfortable boat even if the cabins are not huge. The crew was fantastic -- friendly and helpful -- the entire week. I had heard rave reviews about this boat before going and was not disappointed.
It is true that all of the dive boats (day boats included) go to the same dive sites. We never saw divers from another boat on any of our dives as they seem to co-ordinate and moor on sites with no other boats.
I have also done a land-based dive holiday in T&C. The days are very long though given the distance to the dive sites (about 90 minutes each way). We were picked up about 7:30 and only got back to the hotel at about 15:30 -- that was only for 2 dives. I would go back to T&C for the beaches and relaxation but I would want to dive from a liveaboard.
It is true that all of the dive boats (day boats included) go to the same dive sites. We never saw divers from another boat on any of our dives as they seem to co-ordinate and moor on sites with no other boats.
I have also done a land-based dive holiday in T&C. The days are very long though given the distance to the dive sites (about 90 minutes each way). We were picked up about 7:30 and only got back to the hotel at about 15:30 -- that was only for 2 dives. I would go back to T&C for the beaches and relaxation but I would want to dive from a liveaboard.