I have sailed Windstar 3 times, althought it has been quite a few years, but I had a fabulous time. This was before I cruised on Radisson, and after I had cruised on the "other" lines, so it is hard to look back and really give them a fair shake. I certainly feel I cruised the lines in the best order possible....the "other" lines (RSSC, NCL, Costa,etc), Windstar, and finally I got it right with Radisson. :D
The sails are beautiful...very romantic...but I agree with Ngaire on several points....the sewage smell was pretty constant, which was not pleasant, and the sails were not up much.
I had no problem with the rocking, and I enjoyed the food.
I am just not sure that I would go back after being on Radisson. I think Radisson's food is far superior, and although the service on Winsdtar was good, it also didn't compare to the quality of Radisson.