What method(s) are you intending on using it with ??
For casting I've used PowerPro 10/2 hi-viz ... (10# test strength @ 2# test mono diameter) ... purchased at local store (Walmart or Sportsmans Whse, don't remember)
For my line counter reels ... some have 30# test braid (dark green) (=10# test mono diameter, I think), but I don't know the brand because the line was already on the reels when I bought them (used) from a buddy.
Whatever size braid you use .... have a pair of Fiskar Scissors to cut it with, and a object to wrap it around to pull snagged lures free with. The scissors will cut the braid clean/blunt & not leave a frayed tag end (making the limp braid easier to poke thru the small eyelets of jigs, clips, swivels, or whatever). The object (piece of wood dowel, mop/broom handle, etc.) to wrap it around will keep you from cutting your fingers/hand, or foam/cork rod handle. (words of wisdom from personal experience of trying to pull a lure free with the PowerPro 10/2 wrapped around my fingers )