As an attending at one of the EM programs in the DC area, I can tell you that all of the programs here (I will refer to Univ of MD, Hopkins, GW and Georgetown) are all solid programs. Each with their own pros and cons. It all depends what YOU are looking for. If I were in your shoes and applying, honestly, you can't go wrong with either of these. If you had always had your fancy for Hopkins, you should definately do a rotation there.
Don't take what you read here on SDN as gospel. It really should only effect maybe 5-10% of your choice. The rest should be what you have heard from fellow students in person, residents, and faculty you have talked to.
Q