I just noticed this thread was revived... Since posting this I have become quite a pro at rebuilding heads...
I have since switched to a Protank, but the concept is the same. For rebuilding, I use 32g kanthal, and cotton cheese cloth. It provides amazing flavor, great vapor production, and is cheeeap!
I have also tried out XC-116 ceramic wick, for use with Fuzion Vapors' Unicorn Blood. With silica and cotton, I get an inconsistent
vape quality with Unicorn Blood, but I have a head build specifically for it. With the XC-116, I have the best of both worlds. Amazing flavor, consistent flavor production (not getting the burnt taste after setting it down for a bit) and I dont have to worry about it burning, EVER!
Its pricey, but worth it, especially since you can reuse the wick material even after the coil has long gone...