There are more upscale properties on VG, and poorer access. This provides a viable option for people who will pay to arrive sooner. The direct ferries from St. Thomas only run once a week (AFAIK) and a water taxi from St. Thomas is a rough ride, and expensive for only one or two people. The Miami direct flight to EIS and a ferry are pretty good, but if you can take a direct flight to San Juan and connect on Tradewinds, that is a good option.