has anyone used these strings? Do you like them? Rather then buy strings online and pay shipping I would like to buy them locally, and it looks like I may have to buy them sooner then my imagined because my dang new Martin strings are buzzing SO ANNOYING. No music stores around here have any ukulele strings (except one store that has Kala brand strings but I can't imagine those would be too impressive...), but a large pawn shop near me has Martin "Crystal Nylon" strings and Black Diamond brand strings. So really 2 questions, are the "Crystal Nylon" Martin strings thicker than the fluorocarbons (assuming the buzzing is caused by the Martins being smaller then the Aquilas and they're sitting lower in the nut?), and are Black Diamond strings worth buying? Helpz pl0x ^.^