Mother of God, you're already very well covered for tanks!
For singles, the Ammit has been getting lots of love in my groups, and old school, the Lemo 2 is a classic.
The Conqueror is the serpent's big brother... while a dual with very good airflow, it's become the favourite at my house as it's so versatile, and there is a "mini" version that might be more your liking.
The K24:
$7.78 KENNEDY 24 Styled RDA Rebuildable Dripping Atomizer - stainless steel + glass / 24mm diameter at FastTech - Worldwide Free Shipping
It's tricky to build (3 post and needs to fit the inner glass)
For SS316L, the trick with it is mass... especially with single coils. Not enough wire/mass and the TC isn't going to register well.
And 26G is becoming my favourite, and as far as recommendation, simply try and fit the largest spaced coil on your decks, the Ohms should be from around 0.4 to higher.
Right now, my Conqueror that I have with me, is reading at 0.77ohm (dual) and it's as close to perfection for warmth, thickness of the vapour, perfectly balanced with the airflow....
More and more, as I use TC pretty much all the time, am not a cloud chaser (but can run with most of them easily), I tend to not bother with the ohm range (as long as it's over 0.2ohm) as much as many do. This tank being 0.77, my other one could be 0.4, 0.3, 0.9 and just be adjusting the wattage and Temp, I can get an excellent vape out of them (near identical). I tend to aim for around the 0.4 when I snip my wire and go with what I end up with.
I just consider it more important that the coil be well done, spaced well, positioned and properly wicked.
I believe that most times that someone can't get a good experience it's due that they can't get the coil right (hot spots/position/etc.), or can't get the wicking right.
