I've been running rayon for a while now in a .4 ohm parallel coil dripper and a .7 KFL and I can say that I really enjoy this material. I got mine from halcyon yarn on the internet, I ordered 3 oz for like 7 bucks. I taste just the juice, and I can taste flavors in the juice I never knew were there. It wicks wonderful and I even pushed it to dry hit a few times and it wasn't the "omg I just inhaled Death" feeling we know from sub-ohming cotton, it actually wasn't bad. It was more like a negative flavor shift than a throat burn. After a few hours of chain vaping I pulled out the wick and it was discolored under the coil but I ran it under some water and it just washed out, that tells me that even after running it dry a few times and hours of Serious vaping it was not damaged at all by the heat of the coil. I believe that is due to the unbelievable wicking ability of this material, it doesn't absorb the juice it just channels it. Conclusion: I feel better using this over cotton, it wicks better than cotton, it lasts longer than cotton, it even runs dry better than cotton. It is worth a try