I'm in a dilemma, I am gonna string my racket at 28 lbs soon, but not sure whether to choose Yonex bg65ti, bg 66um, nbg99 or victor vs850. I'm a balanced player, I play as much net play as long range, do equal amounts of drops and smashes, and very tactical. I also do not want to restring frequently, once every three weeks acceptable, and I play approx 8 hrs per week (perhaps the thinner strings won't last long enough?). 65ti is most durable I observe so far, but heard that its feeling is not so nice. Wonder will it be a completely different story at 28lbs? If you have other yonex strings to recommend for my playing style do add in as well. Thx.