hammerhead man:I earned my OW, AOW, and Master Scuba Diver certs at Adventure Scuba in Chantilly VA (not far from Dulles airport). They are a great bunch of guy and gals. They focus on customer satisfaction. Their website is www.scubava.com.
I second Ham Head - Adventure Scuba is quality customer service. Prinyed on their sales receipt is "No sale is final until the customer is satisfied"