Yesterday I played with it again after a long time. My SDC W997 blade is now repaired so I glued used C55 and O7P - not new - I just want to squize some time from these rubbers now when the season is over... The C55 indeed has its merrits, the sponge is very pleasant, a bit less dead than chinese sponges like in H3, R9, DFVP, but still firm enough to support when we use power... But the top-sheet's durability is really sub-optimal... It is fair to say that the rubber is actually not cheaper than D09C... The rotation felt a bit less than D09C to me and to my training partner, that is also because the top-sheet is not new, but not older than 2 months... Also, it is not really light - but I don't have hard numbers this time, it's perhaps also because I left the old glue on those rubbers this time - the setup is 201g and the blade is 91g... I will continue playing with it for cca 1 month, because after the boosting/glueing job it is now hard to admit, that I should have thrown both of them to the garbage already ;-)
P.S. I hope to see you and all other Slovak and Czech TTD members, without exceptions, in this year's TT-forum meeting near Bratislava!