Who uses B50 on a bow that will stand up to FastFlight, other than me? My custom came with both kinds of strings. The maker recommended B50. I tried both. The F/F was loud, and would not tune perfectly no matter what I tried. The B50 is quiet, and tuning is so perfect that in 2 years of daily shooting, there is no visible wear on the rest or sideplate. I know I'm loosing fps by using B50, but my arrows still give me complete pass thru on whitetails. Is there such a thing as slower but better?