The willow on the Kookaburra looks drier this year than the ones last season. I had a couple of Kookaburra bats and they looked great but edges were petite (especially on the Beast). The willow on the Kahuna RP is horribly light - beats my 40mm BAS. A team mate has bought a massive RP Kahuna with a massive profile (quite similar to my UZI C6+) but weighs just 2.9
SG have been making bats with big edges for a few years now, but the quality of their willow is better than (BDM, SS and others) as it not dried as much. However, the bats tend to be a bit heavier (traditionally SG has been known for making some of the lightest bats).
Look at the edges on Sehwag's bat made by SG now. They are massive.