This strings are impressive.
A modern poly with lots of feel, arm friendly, spin and power. Durability was also something to point out. Even thought I am using it in a pair of Head Liquidmetal 98 sq. in. with a very closed pattern (18×20) I have been using them for almost 5 months now, without breaking them and that is really a long time for 19g strings. Tension loss is minimal and I do added a couple of string savers a month ago to maintain tension. I do have a control old school pair of racquets but the strings added control to my game and they added the depth, spin and power I was looking for. Now I can fully swing my serves and groundstrokes without being afraid of hiting them long. If you use a closed pattern racquet and want to instantly add spin to your game, you should give this string a chance. I can reccomend to use them without hybridizing. This polys feel softer than traditional polys and won't fatigue your arm like harder polys do. Strung @55 pounds on Head radical liquidmetal raquets. I'm a 4.0 singles and doubles southpaw player with full swing groundstrokes and 2handed backhand. I'm 6'0" 180 pounds and have been playing for 25 years now. Hope this helps.