My office is in Rockville. When I lived in Mount Vernon and Downtown, it was an hour or less door to door in the evenings barring any dramas and a bit under an hour in the mornings. I would work from like 7 to 3 to beat the traffic. It wasn't horrible, actually.

Now I live in Butchers Hill. This has added 20 minutes to my commute, and it sucks. Definitely live closer to 395 in Baltimore if you can.

I hate the commute, I'm happy when it is decent, but I really cannot stand driving it. If the Purple Line ever gets done and I still work where I work now, I'll just take MARC and the purple.