I am a recreational player, but I played about 2-3 hours 6 days a week. My usual shots are more flat than top spin. I got it strung at 49 lbs tension (full bed), and it feels awesome. Only choose the 15g to potentially save money in the longer run. My previous string was lux big banger alu power (some of the more used strings for advance players). The wilsion ripspin is so much more soft than the alu and does really seem to add that extra notch of spin on the ground strokes. Been playing with the strings for about 2 weeks, no lost of tension yet. Yesterday after not playing for 3 days, I got into the courts on a last minute call with my jeans and felt that the strings were really coming along perfectly. Really easier for me to feel confident and just go for my shots without warming up. WOULD RECOMMEND.