Kevlar has a bad rep i think. No its not for everyone but what string is? For what its worth I used pro blend all throughout the 80's in my Graphite 110 then in the cts approach 110. Had them strung between 72 and 75 lbs. 20 years later my arm is still attached to my shoulder and still functions well enough to swing a hammer at work every day. I just started playing again this summer after a two decade layoff and had a helluva time keeping the ball in the court until I went back to the kevlar. No arm pain again. To each his own boys and girls... And I dont know diddly about poly but I do regard Chicago Jacks opinion on strings very very highly. So if he says the poly info in this thread is nonsense then it more than likely is.