For simple round wire I've enjoyed 26g SS316L in my NarDA. Also 26/36 SS316L Clapton. Both 3mm ID and 0.5 ohms.
There are two ways to wick and coil a NarDA (not my photos).
Conventional wick with an angled coil (quick and easy):
View attachment 994190
Butterfly wick with a conventionally mounted coil:
View attachment 994189
I prefer the butterfly wicking and mounting the coil as shown in photo #2. It takes more time versus photo #1 but for me it's a nicer
vape.
Very nice as a dripper or on a squonker.