I like the braided Spectra/Spiderwire/etc, mainly for the reason that it's quick and easy just to wrap the lines around the handle. It makes for simpler setting up to fly and packing up when you're finished. Just be sure to use the right knots because these lines can and will slip and come un-knotted if you don't. Many 1/2A sport fliers like light weight like 14# test, but my planes fly well with 30#, drag isn't a bad problem, and they are easier to use without tangling and kinking. Those are only my personal opinions gathered from many flights with no failures. Another thing I like is when I get wild doing lots of loops, and don't count wraps, they never bind no matter how much I twist them up.
Rusty