Power Pro gets the most hype but on a bait caster I've found 20# Spiderwire Ultracast green beats them all, sure it's expensive, but lasts a life time and never wind knots. Can tie direct in cloudy water, make a loop with a huffnagel knot and pass it over the bait/hook. Clear h2o use 15# fluorocarbon leader tied to the loop with an albright knot, the braid never cuts this knot. There's another good knot like a uniknot with an over under weave with the two lines overlying, both take care but make small/tight knot.
On a spinner I find Fireline Crystal in 14-20# is best, a little stiff when new but gets soft with use and like the above lasts!!, also overstrength, 15 is like 20#. CB