I've an additional question - I believe there are 2 types of wick, one better flavour/lower temperature tolerance than the other - in real terms, how likely is this to affect performance and is silica the one with better flavour?
How does different thickness wick affect performance?
I also use 2x2mm silica wick...placed side by side and wrapped together with the coil.
If you want a higher impedence coil (and I am guessing you are) I would go for .16 wire otherwise you may have problems getting 5-6 wraps in the confined space without hot spots.
You can use kanthal or niachrome wire.......this is the best site I have found to date for wire (res and no res), wick and mesh.