For a boat that size, 3/8" seems HUGE. Maybe for sheets, if you like the comfort of it; but for halyards & lifts, that's really fat. A 1/4" hi-tech line will have less total stretch, run faster, and weigh about 1/5 as much. We're looking at Control DPX among single braids; MLX and Warpspeed are also good core-dependent lines, comfortable to hold & strippable. Vectran and Technora are the lowest stretch/lowest creep alternatives, but pricey. Many club racers speak very highly of NER's Salsa, which was originally a dinghy control line but works well on larger boats, too.