If you are looking for less expensive option to VS, Toughgut or Klip - this string is fine choice. It does have a bit less feel and comfort than The VS and Toughgut but not enough to make a difference in your game. Durability is the same, no better, no worse than the more expensive mentioned above. I string my own racquets; RF 97, Vcore tour's(G,97&89), Other ProStaff's, Yonex' and Head generally with the mains from 60-55 lbs and crosses at 2-3 lbs less depending on the racquet. I will also string these racquets occasionally as a hybrid using Ashaway monogut Zx. After using the VS gut primarily, I now use the Classic Gut because the price, playability and durability that does not disappoint.
Strung this on the Graphene Instinct MP at 54 lbs on the mains (51 lbs cross with Cyber Flash). It feels a little stiffer than the more expensive natural guts, but overall still comfortable and powerful. String conditions was good and was easy to string.