Deja Vu is ran by some good people who provide solid customer service, and they have some really great product too. Id highly recommend them as a reliable place to get what you need when you're in DC.
I only use concentrates, and there aren't a ton of places in DC with good stuff that is reasonably priced. Thankfully, High Society is one of those few places and they haven't let me down once in the times I've used them. high quality and professional drivers who have never been more than 15 mins late for me make this a great dispensary.