My 2 cents on the asym/sym advantages.
Many of the newer faster hull designs dont see app wind angles beyond 130 degrees in all wind conditions. If you look at our polars our app wind angel at 12 knots is 150ish and back to 170 degrees at 16 knots true. Thus I beleive a sym works well for the boat, a all asym polar curve for the boat will not be as verstile.
I tried a "modified" melges 24 kite with the same idea to go all asyms and I did not like it. I dont beleive the boat has the boatspeed to make asyms a verstile sail. I do think there is a place for an asym reaching in distance race, but I dont think you are going to see a huge speed increase.
I got a new sym 2S Airx .5 (600) for last season and love it. I was very competitive in light and medium air. Under 12 knots true I was faster than t-tens I sailed against. Over 12 they would start slowly moving on me (which they should).
The Friction Loss Pac Cup recap is a great analysis of what sails they liked while racing to Hawaii in this forum as well.
