Do you have a preference for commuting? Upper Northwest is a long ways from Capitol Hill and depending on where you are headed, you may find that this will determine where you want to live.
I am not that familiar with the neighborhoods in DC besides Trinidad, Old City, Kolarama, Tenleytown, and Columbia Heights. I'm just looking for safety, closet space, and possibly ample parking. My wife and I can narrow down the list to specific places once you send a list of suggestions.