Another vote for the Epifanes.very high quality and available in gloss and satin.They also make a ery high quality two part urethane similar to Imron.I painted my boat with it and it looks as good now as it did four years ago when I did it.Did what little teak I have left in my boat with their gloss wood finish and it's still in great condition.
http://www.epifanes.com/home.htm