I have sailed the BVI seven times. For all but two I flew from NJ to STT, usually landing in the early afternoon and taking the 3pm ferry. Coming back I have always caught the 10am ferry from Road Town to catch a mid-afternoon flight home from STT. This has been the cheaper option all seven times. I have never personally had a major problem with the ferries but I have read plenty of posts on this board from people who have had ferry delays that made them miss their flights. Flying into Beef Island is more expensive but definitely less stressful. I prefer it when the cost isn't too much more. For my trip next summer I paid considerably more to fly into EIS. I'm traveling with a newbie and my 8 year old son and I decided to pay for the convenience. You really can't go wrong either way.