I've been to Cherry Springs State Park and Green Bank Star Quest, but a site that is better than either is Spruce Knob, WV (near Circleville, VA and 32 miles from Green Bank) and its Almost Heaven Star Party. I'm not sure why this site was not mentioned, but it should have been. It's 1000 feet higher than Green Bank with no light pollution and the best site I've seen east of the Mississippi.
Spruce Knob has an altitude over twice that of Cherry Springs and is somewhat darker. OTOH, there is very limited space on the summit, there are no facilities, and it can be quite windy there.
The Gatewood Campground on the flank of the mountain has only a few campsites and the clearing has limited horizons. In addition, there is no water or power and equipment has to be carried into the clearing.
The nearby Mountain Institute, the site of the Almost Heaven Star Party, is probably the best overall spot to observe from in that area.
The Dolly Sods Wilderness is not all that far from Spruce Knob and is also a great dark site.
Sic itur ad astra!
Chance favors the prepared mind.
A man is a small thing, and the night is very large and full of wonders.
The AHSP at The Mountain Institute is the only site on Spruce Knob from which I've observed. The Mountain Institute has power for battery charging, hot showers and there are Portapotties on the field. Almost the same as Cherry Springs, except at Cherry Springs you need to drive 6 miles to pay for a hot shower. I believe that the observing fields (3 each for campers, campers with cars and RVs) at AHSP have as much room or more than Cherry Springs for observers, but it is not as level. Also, at AHSP you can purchase a meal plan for 3 meals a day cooked by TMI staff. For people who don't camp, there are a limited number of Yurts available for rent.
Last year, AHSP had a visit from hurricane Irene, which makes "quite windy" an understatement. The other two times I've gone had no significant wind.
I've been to the Mountain Institute but not to the AHSP, as it conflicts with Stellafane, which I've attended for many years.
I attended the Green Bank Star Quest once, and, while I was not particularly impressed with the observing there, the speakers and touring the NRAO more than made up for that fact.
When I said quite windy I was referring to the peak of Spruce Knob. There is a relatively small area on the summit that is sheltered from the wind.
Sorry! My comments were only about the Star Parties as in the original article by Bakich. I mis-read your comment. I agree about StarQuest. Green Bank's light pollution has grown in recent years, but the star party offers much more than a reasonable, but not great, sky.