I'm running braided lines on the front. pedal response from that and bmc stopper improves brake pedal feel. I can tell where my tyre threshold is before they lock.
Things to look out for.
improper end fitting installation, frayed braiding, kinking during shipment, correct thread on end fitting (some are threaded to tighten anti clockwise) and what rubber they are made from. Some lines although braided can be of a rubber not suited to brake fluid.