Have you tried silica and regular spaced coils?
I personally dont really like micro coils, and I like cotton even less.
I can build a nano dragon setup, throw vapor in thick clouds 8 feet in front of me, but the flavor is bunk.
Whereas, if I use my preffered 3mm Silica, 24, 26 or 28gauge wire, 3 or 4 wraps, make it a dual coil.. Not only do I get huge clouds, but the FLAVOR, is incredible. However, I cant lie.. A nano compressed coil like the dual nano dragon, WILL put out more vapor. Not flavor though, In my opinon.
My most used build:
3mm Silica, tripled over. I fold it, but it's the same as taking three strands of 3mm. IPve gotten very comfortable working with just the amount of silica Ill use on the atomizer, but when I first started, I would use more to do the build, than trim what was needed.
28gauge Kanthal
3 wraps
Do this twice
Make sure that the coil is tight, but not choking the silica. Make sure that the coil, should you overdrip, will not sit in a pool of juice.
Dry burn to ensure both coils heat up pretty much evenly with the other one(slightly faster on one is OK, but a big difference is not)
Add juice, vape your face off.
This will give anywhere from .32 to .41, depending on the spacing of the coils, and the connection of the atomizer. I find, done right, .35 is where it most often lands. So make sure to use a proper battery.
Now if you like this style of coil, you might try some ribbon of equal resistance. Ribbon wire is great for flavor IMO.