The answer to your question depends on where your employer is located, the timing of your commute to work, and your willingness to sucrifice time spent with your family vs. more house for the money - be sure everyone in your family is on the same page regarding those issues, especially the last one.
The Center for Neighborhood Technology analyzed the Housing + Transportation Affordability Index, which examined 161,000 neighborhoods housing 80 percent of the U.S. population, and concluded that for most families, transportation is the second-largest household expense - see my April, 2010 blog:
Purcellville is a beautiful area that offers the BEST of both worlds: proximity to Washington, D.C. and the serenity of the country lifestyle. However, the morning and evening commute can be quite brutal in Washington, D.C.
Purcellville is a great place to live if you do not have to commute during the rush hours or better yet, can work from home.
Let me know if I can help you to make an informed decision.
REALTOR, ABR, GRI, SFR, CDPE, CHRE
Licensed in Virginia
Keller Williams Realty