St. Kitts -- Brimstone Hill definitely. It's really amazing. I don't have her contact info but we took a tour w/ Mrs. Wallace. She was lovely, informative & kind. Her van was clean, comfortable & well stocked. She took us everywhere for a very reasonable price. I think it was $30 pp.
St. Thomas -- shopping, hands down.
I understand the Boatyard in Barabados is nice. We went somewhere else & it wasn't that great.