They are about the same... The Izorline f/carbon has superior non-fraying qualities. Izorline is a little cheaper to boot. If you are looking for a great non-fray line, I would then go for Maxima (IMO). However, I have yet to break off any fish on Izorline. Matter of fact, I haven't had a problem scraping the bottom for Winter Blackmouth either.

Downriggin'
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"If you are not scratchin bottom, you ain't fishing deep enough!" -DR

Puget Sound Anglers, Gig Harbor Chapter