Originally Posted by Boricua
How many playing hours shall I expect before the Zyex breaks or has to be cut out?
I'm at about 6-7 hours in a full bed of ZX. I hit moderate topspin groundstrokes. I'm not seeing any notching and only a tiny bit of string movement. The strings feel like they settled in after the first couple of hours. I'm getting nice movement on my serve, both slice and topspin. And the strings are still very comfortable.