The strings will last a maximium of 12 playing hours because of the wear on the strings that produces the movement that produces the spin !
That movement means that the strings are being sawed to pieces!
But there has been a racket that has been available that produces more and is very easy on the strings, before you try a New Spin racket (open string pattern) try out a PowerAngle racket it will give you at least 3 x times the string life of the "NEW Spin rackets"! and it is far better for your arm! I have tried both types and guess which one I still use?
PowerAngle the number one choice of spin/control players!
Oh and it is also a powerful racket!
Quote: I have known a lot of players that have changed TO a PowerAngle racket but NONE who have changed from a PowerAngle racket!
There is one racket in the range for you!
Hope this helps!