Ths 3.7 is in excelent condition. Red.
The 4.7 is in excellent condition. Blue & White.
The 5.2 has a very small tear in the x-ply toward the top of the sail. A close up of the tear is in one of the photos to the left. The rest of the sail has normal wear. Red & Yellow.
The Zeta is built for heavy sailors and onshore wave conditions. The deep profile provides stability and good "get up and go" off the beach with a nice locked in feel.