Just wondering, in general, how ling do Multi-Filament Strings last in general? I usually play with Wilson reaction. I play between 3 to 6 times a week (team tennis, tennis ladder, practice) and I find that Reaction keeps its feel, touch and control for about 3-4 weeks - I play with a Wilson Blitz strung at about 63 lbs. After the third or fourth week, I feel like I get a trampoline effect and that balls start going long and I loose control. I am thinking about trying a different string, but I was wondering if about 3 weeks of play is considered good durability for a multi? The synth gut on my other racket doesn't have the same level of feel, but it seems to last alot longer.