If you want to swing through Walnut Creek/Concord area, you can visit my tank.
Also, Colin is selling some zoas, so you can pickup today. His prices are very reasonable.
Diablo has lots of zoas too. Of all the local shops, Neptune's and Diablo have a wide variety of "name/fancy" Zoas as well as some no-name, still look good Zoas.
I do not know about Aqua exotic quality/inventory.