I have a friend who bought through me. He lives in the Mt. Vernon neighborhood by the Convention Center, and he works for Booz Allen in McLean. He always says his commute is fine and I have never heard him complain about it. Let me know how I can help you too.
Reverse commute, not so bad and depending on where in DC and McLean, you could avoid the beltway completely. For free access to the MLS visit my website @ http://www.ISellDChomes.listingbook.com. Let me know if I can be of further assistance.