Have used this for many years. Good topspin production, great feel. Just the right amount of durability to stay fresh but not last too long that the strings go dead.
Strings are as good as or better than any of the name brands available at a fraction of the cost. Shipping is always quick and easy.
Not as responsive, perhaps a good product for your beginner player and one who doesn't play regularly.
Great for Hybrid Stringing
I have been using this Super Poly 17 for the mains in a hybrid string pattern with Synthetic Gut Ultra 17 as the cross strings for years. I get outstanding spin, excellent feel, great durability, and no problems with tennis elbow like I used to get with co-poly strings. All my friends are now having me string their rackets the same way.
Quality string at a respectable price
Love the durability and playability of the string. It holds up well and behaves as expected in competitive play.