First to clarify i will use two simple terms, grippy & sticky, the grippy rubbers relies on porosity and sticky on the rubber stickiness for lifting the ball, slow & spinny, pushes with quality spin, service, even with changing the rotation axis so the opponent have trouble figuring the spin incoming, to my game this features are very important because i'm very precise, i play all around with pushes and underspin around 25% of the time and when i need to all attack game like a maniac. D09c looses that grippy texture l(Its not a sticky rubber) after a month( for me, i guess will last more or less for some people). After a month you can clearly see without a magnifying glass how worn out is and i can feel how my shoots are failing more often, if you hit harder or play like a maniac of course you will make the ball sink into the rubber and that will make the trick. For $90 in US the cost & the rubber is not worth it, if i was a sponsored maybe i will use it on my backhand. There are people that will play it until the rubber is destroyed & bubbled up and they won't even care/notice how it plays and tolerate this stuff and that is the majority of people but I'm not one of them. I use it only on my backhand, in the forehand is not good for me even new, i use only sticky rubbers now.