here's the scoop on bowstring fibers, as i see it and as i've been spinning and twisting strings for a really long time ...
flemish and endless are the two most common ways bowstrings are created. it doesn't matter which style you use on any stick bow - both are up to the task.
polyester - "dacron" - (browning b50, bcy b500 or b55, etc) is the first modern string fiber for stick bows, and has been in use for lots more than a half century. all stick bows can use this fiber.
high modulus polyethylene - "hmpe" - (fast flight, d'97, d'02, 452, f8125, ultracam, etc) is very high tensile strength string fiber that has less fiber stretch/creep and allows far less strands for any given bowstring. it is highly recommended that a stick bow have the limb tips reinforced for this type of string fiber, and the strings loops padded as well.
lighter mass weight strings allow for faster arrow speeds, maybe between 1 and 5 fps on the average.
there is no substitute for testing different string fibers for both performance (the transfer of energy from the limbs to the arrow, speed) and overall bow noise on release.
when in doubt, use dacron. keep the dacron strand count reasonable, i.e. - a minimum of 10 strands for up to 50#, 12 strands for up to 60#, 14 strands for 70#+.