al my juices are pretty light and thin and i found a fat wick rattail style (like the octopus does it) i use a doubled up braid and it seems to work in everything well. as long as the coil is adjusted to sit in front of the airhole properly.
im not sure what it is but the octo, even with my wicks, seems to just put out a huge plume, i would like to find a nice SS version with a sidehole.