I think this ^^^ pretty much it up when it comes to Building Coils. For me, and the type of Hit I want, a 3mm ID Coil of 26ga SS (or 28ga NiChrome 80) is a Great Build on a STM/TTM. And something like these... $2.20 Authentic MKWS 316 Stainless Steel Pre-Coiled Wires for RBA Atomizers (50-Pack) - 26 AWG / 0.4mm dia. / 0.32ohm at FastTech - Worldwide Free Shipping $3.26 Pre-Coiled Wires for Rebuildable Atomizers (100-Pack) - 29 AWG / 0.3mm dia. / 1.1ohm / 12*12mm leads / 5 loops at FastTech - Worldwide Free Shipping or these. ... work Great! But I'm a Card Carrying Flavor Chaser who Vapes at Relative Low Wattage on a Single Coil RTA. But the person Next to me might be More into Clouds and Higher Wattages. Or a Balance of Flavor and Clouds. Or who knows what? So the Only way to know what is Best is to do what you Suggested. And to Try different Gauges and Wire Types.