I think that conventional Dacron sails from a good loft are quite remarkable. When we bought our boat our #2 was obviously shot and our Hood furling main looked pretty good but was far from new. We bought a #2 from North with a great boat show price. Our first year we went NYC to Bermuda and back for a shakedown and then the Cheaspeake as far south as Grenada and back. Before we left we assumed we would need a new main. When we got back to Florida we could not see any change in the main and the genoa needed only minor repairs. So we put off getting a new main until later (Oz or NZ?), With further minor repairs in Brisbane and South Africa we are ready to head to the Caribbean and North America. We wii be over 30,000 miles by then and these sails have been up in winds they were never meant for. For a cruiser I wonder if the fancy cuts are worth it.
Finished the circumnavigation in early February in Grenada. Have to work on a book project for the next several months so the boat will be waiting for next year.