Thank you for the info Drew. Just a couple more questions: So if we did decide to stay on the quieter West Side ...
As a quick point of clarification, the West Side of Grand Cayman is the busiest spot in all three islands.
the sister islands aren't dove from Grand Cayman, too long a boat ride not something any op does. (The Cayman Aggressor starts from Grand Cayman and sometimes doesn't even make it to Little Cayman if the weather is rough.)..
Its around 85 miles one-way...several hours by boat each way, and there's no ferryboat like Cancun-Cozumel. Pragmatically speaking, your only choice is to fly to the Brac in a 737, or fly to Brac or Little in a Twin Otter Turboprop (with stronger baggage restrictions).
Thank you all thus far for the info/advice you have provided...now for a very important question, where is the best diving...and least crowded diving? Little Cayman, Cayman Brac, or Grand Cayman?
IMO, I would say the best diving is in Little Cayman because you have Bloody Bay Wall.
While I prefer Brac, for more varied diving. We stayed at Brac Reef Beach Resort and did a day over on the wall.
This type of question always gets a slight divergence of opinion (Little Cayman vs the Brac), with the consensus being that it isn't Grand Cayman.
And fortunately, you broke your question into two parts.
For
least crowded, there's now more dive operations sharing moorings on Little Cayman than on the Brac, so based on this, you can expect to see reefs that have less diver pressure on the Brac. The question of which dive op puts fewer divers on each boat is a harder one to gage, particularly since the Reef Divers operation supports both LCBR and BRBR and are quite comparable. IIRC, Pirate's Point and Southern Cross each only have one diveboat, so the question of how crowded it is will depend upon accomodation levels.
For
what is best, part of this depends on how you define quality. Personally, I've stayed on both islands multiple times and favor the Brac .. its as
Pearldiver07 mentions: dive site diversity & variation. As much as I enjoy Little Cayman's Bloody Bay's very sheer walls, I have observed that since the dive ops there don't get much opportunity to go elsewhere, since each week's new batch of visiting tourists invariably want to go see the "famous" dive sites, the result is that there's roughly only around a dozen or so "beaten track" moorings that one always seems to go back to...and after several dives, even the sheer walls can get a bit monotonus and you're looking for a change of pace. It also doesn't help that because these moorings are frequently pretty closely stacked together, each one really isn't all that huge of an area to explore...before you know it, you've literally swum over to the next mooring and briefly explored two sites (IIRC, my personal record is three moorings) in but a single dive. However, the north side Bloody Bay sites do also tend to be relatively shallow reefs, so they also offer longer dive times, which is probably of interest for divers who are heavier air users, to still get a 60 minute dive in.
Best way to decide is to take a two week vacation and spend a week on each island to decide for yourself
-hh