Commuting to DC from Annapolis will be a bear. If you are not outside of DC heading home east on Rt 50 by 330-345pm expect it to take an hour and a half. If you are at one of the marina's that are a goodly hike south from Rt 50 once you get to the town (such as Jabin's or Port Annapolis down Arlis T. Allen Blvd) that can be very, slow in addition to the rest of the commute.
Deale will be shorter, although the commute in the morning can be long as Rt 4 is mostly 2 lanes each way. (For some reason it is not as much a factor outbound in the afternoon.) In Deale try Herrington Harbor North and Shipwright. Herrington South is a possibility but will add 15-20mins to the commute.
Annapolis is a busy town with lots happening whereas Deale has a mom & pop grocery, 7-11, Subway, and not a whole lot else, if that matters.