If I use mono, it's almost always Trilene, but all my bass reels have Fireline Super Line on them...no stretch, almost impervious to EVERYTHING, lasts for years! All of my SW reels have 60 lb braid on them. I keep all of my rods/reels indoors, in climate controlled locations, so I don't get environmental breakdown or degradation of the line during non-use time; I have reels that have been spooled with the same mono for 10+ years, and its' breaking strength still meets or exceeds the original advertised strength for that line.