I lived in Loudoun County, Va. (Leesburg) for 10 years before moving back to Ohio, my parents, and my in-laws still live there. First, the Dulles technology corridor sucks for traffic. Leesburg is about 35 miles northwest of DC, when I was doing it, the commute to Chevy Chase, MD routinely took an hour to an hour and a half, and that was 5 years ago. There are places that you can go that the cost of living isn't so bad, but you're looking at a pretty gnarly commute to get there. I get to go back a couple of times a year, and every time I leave with the feeling that the entire area is a great place to visit, but I could never consider going back to live.
I would highly recommend taking a long weekend to go down there and check things out. I'm very familiar with the MD, VA, WV area right there where VA goes pointy at the top, I too can offer some assistance if you have any questions.