Here's a cool thread by Karen where many people submitted the results of their favorite builds.
Micro coils and ohms description
Mine has changed some and I now prefer a 10 wrap 29 ga micro coil at 1.3 - 1.5 ohms on my mech.
I'm vaping a 1.6 ohm 29 ga micro coil ATM because that's what came off my the slightly larger mandrel of my flavored gizmo yesterday. It's a great vape. I like it