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.
In South Africa doing lots of boat stuff. Departure north from Cape Town around December 15th. Arrival in the Caribbean around the beginning of February, after 5300 miles or so.