I've done USVI, BVI, and Renaissance Islands - of the three, enjoyed the latter the most, though all were great experiences. Went through DYC at BVI and St. Martin - the people at St. Martin were highly competent and helpful and a pleasure to work with. No complaints about BVI DYC, but can't say as much, either.
Renaissance Islands, IMJ, provide much more variation and selection for sailing, parking (anchoring, mooring balls, and marinas), and shore culture and restaurants than the VI's, and if you've done the VI's, will offer a welcome change and difference.
And if shore leave doesn't interest you much, the sailing also provides more variation and options. If you're up for a long day sail that takes you more than a few miles offshore
, you can go down to Kitts & Nevis
(I did not). For a shorter sail, about 10nm from St. Martin, St. Barts and Ile Forchue, a very quiet, well protected, and pleasant little horse-shoe shaped island between St. Martin and St. Bart. And if you want to stay real close, similar to BVI experience, just circumnavigate St. Martin and hit Anquilla and Tintamarre islands, either overnight or just day stops.
I had to learn stern-in anchoring (Mediterranean mooring) at St. Barts, which was a good experience, though somewhat stressful under the critical and sometimes rolling eye of the harbormaster and a small audience that eventually gathered to watch the spectacle. There was a stiff breeze and it had gotten dark as well. My wife didn't appreciate it, but I regard it as one of those unforgettable learning
experiences, and wouldn't trade
it for any uneventful mooring ball experience. It took three tries to set the anchor, but after learning
to drop it waaay out, no problem.
Chris Doyle's guide to the Leeward Islands
provides about all the info you need to get around offshore
and on. Happy to provide other details if you're interested.