Agree completely on VaLa - absolutely my favorite local winery and you will have a great experience. The tasting comes with samples of local foods. There are others in the area that are good, like Folly Hill and Paradox. Avoid Chaddsford, too touristy and their wine is not that good.
You might want to avoid New Hope area, the only decent one in the area is the Crossings which is ok but very overpriced for what it is. Avoid New Hope winery at all costs. Buckingham and Rushland Ridge are good places for $6 wine, but not te best tasting experience for a special ocassion.
ooooh, you may have just given me an idea for weekend plans as well!
one of my coworkers owns a winery i have been meaning to try:
Salford Valley Winery, LLC
98 Cressman Road
Telford, PA 18969
if anyone knows of websites that plot out a winery map or suggest a tour for you, i'd be all ears...