I'm looking for some build recommendation to get the most, cloud wise obviously, out of my Sigelei 150 and Mutation Xv4, I also have an Airek. My current build is .56 ohms, 24g 12 wraps around 3.5mm at 150w. I've used different ohms and was at around .3 before. I've tried .2 dual parallels too. This was my parallel build, but I usually build them so they look like this. On the MXv4 I place the coils over the bottom air flow and put them low and close to them. On the Airek I have the coils pretty much level with the top air holes.