Kayfun or Russian is my vote....
You need to build coils....Easy Peasy....Youtube search Kayfun build.....
I used to recommend chimney builds but I do not anymore....for some reason mine aleays gunk up and they are a pian to rewick.
Another to trry is the Erlkinogen....A mother to get right but a real pleasure to vape once mastered. Go to the trbuildable atomizer forum, read study and replicate....
This aint rocket surgery either.
Coil wrapping | Steam Engine | free vaping calculators will keep you from hurting yourself and your gear....spend some time with it....
Start with 28 ga Kanthal wire...stay above 1.2 ohms till you get comfortable coiling and using the calculator....leave 30% headroom on your batteries.
I run my Kayfuns at 11-14 watts....Erl is a better vape at 14-20 range.
Happy Hunting