They are different, Antigua well worth a trip. Stopped twice on a cruise and then went for a week. Very nice and more solid infrastructure than BVI, but I think what I like about the BVI is the castaway type feel it has. Antigua much more polished, better resorts and more resorts. Easy to get around and not that big. My heart will always be in the BVI but I do recommend Antigua.
Devlis Bridge and arch, one accessible by land and one only by boat, both a must .