We have used BVI Yacht Charters for the last 7 of our 15 BVI charters. Smaller, middle tier company with great boats and excellent staff. I like being a name not a booking number. You book a specific boat so you know what you are getting. They are Joma Marina, directly across the street for Riteway super market. Very easy to provision and get it to the boat.
They have added several new cat's to the fleet recently. We are mono peeps but looked at the new NautiCat they have for our next trip with newbie non sailors.

http://www.bviyachtcharters.com