Anonymous wrote:OP, if you're willing to pay the local markup, the suggestions for Paul's, Rodman's, and Calvert Woodley are all fine. Ace Beverage in Foxhall and Macarthur Wines in Palisades are also quality shops where you'll find knowledgeable staff and quality stuff. They all offer case discounts (I think). If you want any kind of advice, go to one of those.
However, if you know what you want, you're buying in serious quantity and are looking to really save coin, there are only two answers: Costco and Total Wine. Decide what's easier for you--the Costco on N
The rodmans in DC is consistently cheaper than the one in Rockville and it carries different wines. I regularly drive to the DC location to stock up. By the way, they offer a 10% discount on cases (can be mixed) which sweetens the deal.