32-ga kanthal, 5 *well-separated* but evenly spaced wraps around a 3 mm single-strand silica wick - both ends of the wick going around the atty and in contact with the
juice, around 1.6 ohms. Totally unimaginative, but very quick to set up and yields very good results.
I sometimes use more sophisticated setups, but they work 10% better for 300% more work. Being lazy, I tend to stick to the aforementioned setup.
EDIT: oh yeah I forgot: I only use small, single-coil atomizers (A7, mini-A7, Smok Mini RDA...) Small chamber = big flavor.