Welcome from another New Member!
I've built with 28 ga, 26 ga and 24 ga, all kanthal. Of the 3 sizes, I find I prefer the 26 ga. 26 ga give me on avg 1-1 1/2 more wraps then the 28 to get the same resistance (More surface area on the wick=more vapor and flavor). I find that 24 ga takes longer to heat up and stays hot for a few seconds after I release the button.. I don't like that.
My current build is Dual
coils, 26 ga, 7 wraps around a 3/32 drill bit on a Big Dripper... really enjoying it.. Big clouds and tons of flavor!!