I've mostly played at fields in southern Maine, but DO is very competitive with them.
Directions to the Field:
Easy to find. Right on the edge of Route 201 (Left from the north, right from the south)
DO Paintball is a great, family run operation. The "shop" is very limited, but if you plan on going back, the owner is willing to order basically anything for you. The fields themselves are great. The plywood field is a nice size for 3 man, whereas it would be easy to play 5 or 7 man on the airball field. The family that runs it is very nice and all very personable people. They made me feel welcome immediately when I got there. I will definitely be returning. I give them a 9 only because they don't keep anything in stock really.