I love the Graphite bats. I have all 4 of the graphites. Kahuna ICON, The Beast (2 of these), Diablo DM and Hurricane Genesis (2 of these) (page 45 on your kit topic)
Conterary to popular belief, they dont improve the performance of the bat. each bat has a peak period of performance, the graphite backing enchances the duration of this period so the peak period lasts longer. Its no different to applying an anti scuff sheet to prolong the life of a bat. I belive they were banned because they were a major step forward and woul make kookaburra a monopoly
due to patents etc