Seaguar Salmon floro is some wicked stuff. 30lb for leaders. Palomar knot. Haven't broken/snapped a leader yet *knocks on wood*. Super abrasion resistant. I went a whole trip lake trout fishing, massive fish, never broke a leader. Re-tied it after 3 days, didn't think I had to but did just in case.
Have some P-line (CFX I think it's called?) for 60lb hali/toothy buggers. Holy crap it is some stiff stuff. Good luck cutting that I think I'd have an easier time wrecking a cable leader! Tied some hootchies with it too.
Never using mono leaders again. Had great success with the salmon floro leader! Mono is so fragile in comparison. Just take care with your knots (palomar when I can)