My favorite build so far, or at least the best performing in my opinion, is 5 wraps dual coil using twisted 28 gauge wrapped on the little blue screw driver that came with mine from Infinite. I think the internal diameter is right around 5/64th and it meters out to .4 ohms. I've been using this build for the past 2 weeks or so and the flavor is the best I've experienced so far and the vapor is nice as well. I'm vaping Aurora Borealis from Nebula right now on it and it is quite nice!
EDIT:
Forgot to mention that I'm using some Shiseido cotton pads for wicking and though it doesn't appear to be anything like the much talked about Koh Gen Do cotton, it is better than the standard cotton balls I was using previously. Also, the coils are positioned as close to the air holes as I could get them without risking a short.