Just Tennis restrung my racket recently (superbly, as always), and I switched from a different Lynx string to 17-gauge Lynx Tour Set, which is a bit livelier but also seems to grip the ball slightly more for more spin. I had it strung at my previous tensions, 54 (long) / 55 (cross). It didn't take long to get used to the new strings -- it's hardly a night-and-day difference -- and I'm very satisfied with them. (My unforced errors remain caused by occasional onsets of tentativeness, which no string can alleviate...)