I live near Berryville, VA (22611) and today installed a Terrestrial Digital 91XG.
http://www.hdtvprimer.com/ANTENNAS/XG91.html
This has greatly improved my experience with OTA HD viewing. I connected the antenna directly to my ATI HTDV wonder with a 50' RG-6 COAX cable. I was going buy a taller mast but may not have to because most channels I want are now coming it pretty well. I do not have a pre-AMP yet but may still buy the Channel Master 7777. Lastly, I now believe I will not need to purchase anything to rotate my antenna since I'm getting most Washington DC and Baltimore HD channels.
Very Happy so far with new antenna.