I have 28, 30, 32 ga and that awful Kanthal D .05, I don't like the taste on the 28 either... 
I seem to do badly with the thicker wires, my 30 works the best for me (and I even taste that). No amount of heating and carbon film helps the thicker wires much for me, and if I 
vape it a lot, I end up with sore spots on my tongue (which means I have to not use that atomizer for a while). Just made the neatest teeny microcoil out of 30 ga on a corsage pin for my A7 (in Microstick). WOW, did that turn out amazing

!!! 
I will try a twist wrap soon

!