Little Cayman has slightly better diving than The Brac. Never dove Grand Cayman because if I'm going to travel that far I'm going another 90 miles to great diving.
Been to The Brac four times and Little Cayman two times. Probably headed to The Brac this fall to take advantage of good deals.
I couldn't agree more!
I recommend Southern Cross or Pirate's Point (more expensive, better food). The other 2 are McCoys, kinda run down and just not that great, Little Cayman Beach Resort, more expensive, food not great, staff kinda nazi-like, well many of them anyway. My opinion, YMMV.
And btw, some of our best dives at Little Cayman were SHORE DIVES, contrary to at least one post above. There is a huge concrete deck that's all broken up, but some of the best shallow shore diving I've ever done. We did it as a night dive and had to literally dodge the nudi-branches, they were EVERYWHERE! Of course it's a long swim out to Bloody Bay wall, but it's like that on all of the Cayman Islands. But for amazing 30-50FT. shore diving, you won't find a better place! Just ask the divemasters or anyone that lives there. Since there is almost nothnig to do there BUT dive, the locals all know the best spots. We never had any shortage of shore dive sites, the only problem was transport! Getting there on bicycles with tanks and all was a bit of work. But it's not all that hard to hitch a ride either! I think it took us all of about 5 minutes for the first car to come along, it was a truck, and he not only drove us to the shore dive, he offered to pick us up after! We ended up getting a ride back to Southern Cross in about 10 minutes with someone else. Half the people there must have trucks! But they are all very friendly and we never had a problem getting to or from any of the amazing shore dives.
One other thing, most of the resorts there offer multi-tank packages, so you can usually dive your limits without even leaving the resort. We just wanted a day to explore so we rented a couple tanks, hitched a ride, and off we went! We could have stayed right at the resort and went out for more boat dives if we wanted to that day.