Been to and loved both, but very different. Go to Kauai if you're searching for:<BR><BR>Great spas, impressive resorts and incredible swimming pools (stayed at the Grand Hyatt, which was gorgeous, had the most wonderful spa and meandering pool area)<BR><BR>Pretty good restaurants (enjoy Maui or Honolulu restaurants better)<BR><BR>Great day-trips and hiking to the North Coast, secret beach, Na Pali Coast boat trip, Waimea Canyon, lunch at Princeville Resort.<BR><BR>Hawaiian music and hula dancers!<BR><BR>Go to St. John's if you're searching for:<BR><BR>Great beaches (Hawksnest and Oppenheimer are my favorites)<BR><BR>Beautiful, blue, warm ocean that I can never bear to leave!<BR><BR>Good, but casual dinners<BR><BR>Villa rental - best way to go on St. John. Was not impressed with Caneel Bay or Westin, but loved rening a private villa, stocking it with nice wine and rum drinks, cooking 2 or 3 of our dinners in, jerk-spice chicken legs and burgers for lunch every day, sunning in the nude and our own private plunge pool.<BR><BR>Day trips to other islands - very fun and great scenery!

Have been to both and while Kauai was very beautiful I would never go back. If you're looking for wonderful beaches and warm clear water you will definitely want St.John. We went in May to both places (different years!). The surf and currents around Kauai made it almost impossible to do any snorkeling, or swimming, and feel safe. We tried beaches at both the north, south, east, and west sides. Had plenty of opportunity as we were there 2 1/2 weeks. There is just no comparison to the Caribbean waters. Guess it depends on what you're looking for. If you're sightseers, go for Kauai. The land itself is beautiful. If you're beach people, hit St. John!

Michael,<BR>You have just named two of my favorite places, and I don't think you could really go wrong either way. Having said that though, I do agree with the other posters who said if the water/beach is more important to you, go to St. John.