Of the Carolina "utility" boat builders, I think Jones Brothers are the best. Look for used models that have composite (no wood) construction. I fish on a '00 twenty footer and it's impressive.
A used Parker is another good bet. They use lots of wood and poly- or ortho- resins in the construction, though.
Privateers are a good boat. They use a heavy glass schedule and vinylester resin. But, like most NC builders, I believe they still only "hot coat" the underside of the decks. It's difficult to find a used hull. New, they are expensive.
C Hawks have good hulls but are a notch below the others in quality.
Also, since you're in NJ, I'd run up to NY and check out Steiger Craft. I have seen late model Steigers on Craig's List for short money.