I would say for coral, Aqua World and The Reef Gallery. There are 3 other places, Elmer's Aquarium, Odd Ball Pets and Wet Pets. Granted with the whole Indonesian coral ban currently, most places aren't looking fantastic.
Also depends what you are looking for. Last couple times that I was at Elmers they only had $25 aquacultered frags of like zoas/mushrooms/LPS, but you can sometimes find a nice one. Wet Pets isn't really known for their coral, they are more of a fish place. Odd Ball last I was there they have like 2 frag tanks in the back corner as they are mostly fresh water plants type store.
Elmer's and Aqua World are the busiest stores. Wet Pets is probably the best known for their fish. The Reef Gallery is the most aesthetically nice.
Really depends what you are looking for.