Upgraded to one of these a little while ago but wanted to test it in a few diferent conditions before commenting...
Had an 04 rock before so I was interested to see the differences. On rigging, the new ones set slighty flatter (requiring less outhaul) but look a little nicer (well they are fancy for a tushie...). On the water the it felt even more stable than the previous model, with the pull seeming to be more localised (doesn't shift as much even in the big gusts) making for a more neutral/comfortable/easier ride. For me thats the main advantage of the newer sails. Like the old ones the wind range is huge, if the wind picks up you just add more downhaul, which is great for a lazy man like me

. Only disadvantage I can see is that the flatter setting means you cant 'bag' the sail out as much, but I normally just rig a little bigger to begin with to overcome this.
On the whole I like these sails. They're really suited to me... easy, good feel on the water and bomb proof. My old sail took a beating, with lots of big wipeouts (and a couple of broken masts

) but the sail never needed repairing and was still (surprisingly) worth a bit come upgrade time.
Well there you go footstrap...