I have a few different tanks.
OBS engine 2, VV revolver, Eleaf Coral RDA, Ello mini, smok tfv8 baby,Gs air 2, Gs basal.
Depends what style you vape, mtl or dtl.
With RTA and RDA you can build coils for lower power output.
The GS air coils work well at low power but are MTL only