Ok, so I just recently got my racket strung with luxilon alu power rough mains, and vs gut 17g crosses. It is the best setup Iv'e ever had in my racket, and I want to keep as close to the same string performance/feel. The problem is I played a match yesterday and went to hit for 1 hour today and I am already starting to see some fraying (mind you it's relatively small). I never thought of myself as a string breaker, but then again, I don't think I've ever had natural gut in my racket before. But anyways I can't afford to get it strung all the time. So my question is, what string can give me the same spin/feel as the gut, with more durability? I have been thinking about going with a 15Lg natural gut, how much more durable is this and how much performance will be taken away compared to the 17g?