Well, only have experience with Princess Cay...so far. I was there Oct., '02, and thought it was just great. Had heard good things about it before sailing, and everything lived up to my expectations. I'm looking forward to going there again when I sail on the Caribbean Princess in Oct., '04. Overall, I have heard very little good or bad comments about other private islands, ie. Half Moon Cay, Labadee, etc. Would like to hear and learn more. I have heard quite of number of compliments on RCI's Coco Cay. Looking forward to visiting there this coming Jan., while on the Majesty....soooo, then I can do the comparison to Princess Cay.