I replaced my main with a Doyle zenith sail that has 3 vertical battens, the sail is almost as big as a conventional sail. The battens do reduce flapping of the leach and gives me a little more speed and is better in light air.
The down side is I have had several jam ups with this sail no matter how careful I am putting it away. It tends to bunch up and jams in the slot when I unfurl it, I think the mast bend has something to do with that, I also think Seldon could make that slot a little bigger. So far I've been able to unjam it myself by furling and unfurling till it's free. I spend at least an hour on it each time. One time I was by myself ( thank god for auto pilot) and it jammed two thirds of the way out and I couldn't move it in or out it was blowing about 15 knots, so I pointed it into the wind and set the auto pilot I was then able to drop the entire sail onto the deck and into the cabin and then went back to the dock and started all over, that was not a fun day. Ask me if I would buy the sail again, I probaly would because of the better performance.