Parks we really liked so far:
Fisherman's Memorial State Park in Rhode Island. Close to Newport and beautiful beach towns.
Scussett Beach State Park in MA. Just off Cape Cod next to the Cape Cod Canal. At the beach!
Schoodic Woods campground in Acadia National Park. Huge sites on the very quiet Schoodic Peninsula.
Jonesport Campground in Jonesport, ME. The views are wonderful, the town is tiny and quiet - a downeast Maine experience.
Winhall COE in southern Vermont.
The roads in far northern Maine are marginal - frost heaves got on my nerves.
We loved Cooperstown, liked Bangor, hated Old Orchard Beach. We are now in the finger lakes with plans to head to Alexandria Bay, a must see according to our friends from New York.