I had a pair of realtors who work together as a team (about 10 years). They helped me buy my home there over 4 years ago and sell my house there, just recently. The flyer covered the details of the house (nothing about them). I met them through a physician referral service and they have placed many physicians who are friends of mine.
I think they have a great thing going and are very pleasant. They know MD well. They work for Washington Fine Properties and they focus more on the buyer (if you're a buyer) and the property (if you're the seller) - as opposed to promoting themselves like most agents do (glamour shot photo's on their brochure, etc).
If you want their contact info, PM me.
WASHINGTON FINE PROPERTIES
If I HAD to move back there, I would use them again.