HHHHMMMMMMMMM......I don't mean to be a fire starter but my experience is directly opposite to this on MANY brands of fluoro. They may say it is more abrasion resistent but I don't think they are being all that truthful. Here is why: I think this judgement is based on the fact that fluoro is MUCH harder than mono but ironically this is the reason why it gets more abrasion. The soft and forgiving mono slides around and over rocks where as fluoro gets shattered (figuratively of course). The only problem with my "research" is that I only fish one brand of mono: Maxima Ultragreen. And if you don't already know, the stuff is made from the hairs of Gods and is VERY abrasion resistant and remains strong even when it looks hairy.