I'd like to discuss my experience with 4 Joola hybrid rubbers: Dynaryz ZGR, Dynaryz ZGX, Rhyzen ZGR (now Tronix), and Rhyzen ZGX.
Dynaryz ZGR - I suppose this is meant to be Joola's premium flagship hybrid rubber. Overall it is good and does everything I want. It is slightly tacky, very hard...