Jeff - Willowsford is a great neighborhood; lots of excitement about it is brewing. There's going to be a a ton of construction going on for a while, so be prepared to deal with that, but that's par for the course for most new construction neighborhoods in our area.
I've had clients who liked that particular builder. Most builders in the area, as you are probably aware, are good builders - it just depends on the crew/superintendent running the site, and then the customer service if something does come up after the fact. Two different people will have 2 different things to say for just about any builder in this area.
If you're in Aldie and like that area, definitely consider Lenah Run - a great community with fantastic lots; just not new construction. If I can answer any questions at anytime, please call/txt/email anytime.
Keller Williams Realty