Mac, I have never used anything other than cotton in my micro coils (I did start with the synthetics at first, but that was a long time ago, now). I have resisted trying the many different wicking materials on the market, and it seems that every day, there are new ones.
Kinda reminds me of the beginning of my journey with "coils" and RBA/RTA's. I tried maybe 15 different builds. I ended up with tensioned micro coils, usually singles, in RTA's. I like the RTA's, though I know I can get a better vape with a whole lot more effort (dripping). I rarely drip. Seems to consume my life, but I must admit it's a better vape, but just not worth the hassle to me. I kinda feel that the new wicking mediums may be the same for me, as well (YMMV). Since I have two lifetimes of cotton in my
vaping closet, and literally dozens of drippers,
tanks, RTA's, cartos, and clear's (about 100 I guess), I still use only two now, because I love the vape, the flavor, the vapor, the ease of use, the large 5 mil tank on the Taifun, and it's just the best combination of features for me; and not, necessarily the best vape for me. So, somewhere along the line, I stopped chasing the vape, and "settled" on those features that best work for me in my life. Making near-perfect coils and wicking them with cotton coils (coiled cotton), is about a 60 - 90 second procedure for me, or about as long as I like to go without a vape....YMMV.
So, that being said, why should I try these new wicking mediums? Not that I give a rat's ... that others may love them to death, but given my preferences, why should I switch? As you know, there are not a lot of folks that I would ask this question of, and I very much care what your opinion on the matter may be. Kindest regards, my friend.