Imo, d09c is dependant on a blade -- d09c isn't as crisp on innerforce/wood/outer-limba blades, at least without a booster.
On ALC blades like Viscaria, TB, FZD, and ZJK (or salc/zlc/szlc) d09c feels right and sits in the right place.
As some people said in the topic, the greatest strength of...