gauge: 17 PolyStar Energy racquet: Head Microgel Radical Pro tension: 57 lbs surface: Outdoor Hardcourt power – 9/10 Very powerful string. Taking cracks at the ball with this string is not hard to do. I would compare this string to the last string in my racket, which was Pro Hurricane Tour. Flat powerful shots felt clean with these strings. control – 9.5/10 Very good control with this string. I could place the ball when going for rally shots, and I could take cracks at it that would place right where I wanted. Serving, I could hit my spots without concern. Kicker, flat, down the T, out wide, they were all hit with precision. feel – 9.5/10 Drop shots are easy with this string. I could hit great touch shots with these strings, or stick volleys that seemed to dive right in the corner. My favorite approach shot is the backhand slice down the line, and this string seems to hold the ball on the strings long enough to place the ball right along the line. spin - 8.5/10 I get more spin off these strings than say a Hurricane, but not as much as a RPM Blast to compare them to some poly's. That being said, the access to spin is great. I could hit loopy top spin forehands and I could flick short angle backhand top spin winners. This is a great string for spin, but there are other strings that can give more spin if needed. durability/tension maintenance - 10/10 (SO FAR) So far I have only fed practice and hit in some drills with the team I help coach but the few matches I have played, so far so good in terms of tension maintenance and durability. overall This is a great string at a great price. The biggest upside to me, is the arm comfort. I have experienced 0 problems in terms of tennis elbow since using this string over a week ago. If you are looking for a cheaper version of some of the "upper echelon" poly strings, I would highly recommend this string.