Elmers totally sucks! Way too commercialized!
Wet Pets is good; once again, can be pricey and aimed toward inexperienced clientele.
My two favorite are Oddball Pets (they breed a lot and got hundreds of species to choose from- not a huge selection of salt water)
And Aqua World Super Pet Center (these people care more about fish than keeping the place super clean. Lol. As in they have lots of old equipment and misc stuff sitting around. But the selection is great!! Tons of frags, sw
species, and even odd things- 4 foot gators, turtles- 6 + species, etc)