We narrowed agencies down to Catholic Charities of Baltimore and Barker. (Not sure if you are talking about CC of DC or Baltimore). We attended the info sessions at both, and decided on Barker. We have two kids adopted from South Korea, and overall were very happy with them and the program. There were some bumps in the road, but nothing major (and NO adoption is bump-free. It's a tough road to travel.)
Have you gone to the info session at Catholic Charities? At least several years ago, the agencies were VERY different. The focus was different, the requirements for waiting parents were different, the social worker/presenters demeaner were different - just everything about the agencies were different.
I firmly believe they are both great organizations, so it really comes down to which one you are more comfortable with after meeting them in person.