I vape just single core claptons, no need anymore for low ohm building. I mostly use 29 gauge kanthal as my core then either Ni, SS and rarely kanthal as wraps. 28 gauge core to target a higher 1.4Ω build requires a massive 3.5mmID that takes up the entire airflow space in my STM's, 30 gauge looses its integrity and distorts real easy wicking with rayon especially after a dryburn or two. The 29 gauge is the perfect midpoint making a 2.5ID 5 wrap 1.4Ω build. I mostly wrap using 34 gauge and the builds are kinda thirsty but got some 38, 40, 44 and 46 gauge wrap wire and found out the finer the wrap wire the thirstier the build becomes. Its like a 29/44 can consume a STM of juice super fast, no way could keep up buying internet juices...thank god for DIY.
I can't be bothered with all the other wire types there's too much keeping track whats in what atty, TC and whatever else...too old to think too much anymore so stick to the KISS and I'm happy.