I recently changed from a set of Ezzy's zeta (3,7 to 5,8) to a 2022 set of S2maui Alchemy (3,7 to 5.3). Used the Ezzy Sails for 4 yrs. Until now I've tried only 4,7 with my onshore Witchcraft Shaman 96HDD. Completely different philosophy. S2maui are very light sails compared to the Ezzy's. The power is delivered in a more direct way where as Ezzy's deliver power gradually. My only doubt is whether S2 Maui are more stable in high winds, since Ezzy performance at this level is unparalleled. From another point of view, fatique may come later with S2 sails due to the fact that they are very light and strong. 5,8 zeta was useless to me and was replaced with a freerace 5,8 wicked for high wind freerace sessions.