Whale Tail--I have no experience with NO1SXM, so can't speak to it. Others here really love it, although I think it is a sailboat? I wonder if that would present a problem, if the winds are either too strong or nonexistent? I don't know. However, our group always went on TANGO, and it was great. Haresh is a great captain and made sure everyone had a great time. Haresh also seemed to know where to be, to get close to the action. I got some great shots from Tango over the years. Tango would have a lot more people onboard, so that's a factor to some. Regatta is a wonderful experience from the water. Enjoy!!