For flavor, small tanks with single coil does the trick for me. The logic is; small inner chamber = better flavor
Tank options DTL and Restricted DTL:
Serpent Mini
Serpent Alto
Merlin Mini
Kayfun V5 clone
SXK Doggy Style
Tank options MTL:
Kayfun Mini V3 (though I realized coils gunk up real quick even with juice with no additional sweetener)
Siren GTA (claimed to be the best budget MTL tank)
If you don't mind drippers (meaning you have to bring a bottle with you to drip when cotton is getting dry):
Odis O-Atty
Hadaly
NarDa
Mods:
Really depends, do you want something portable or something bigger for battery life?
I'd recommend the Vapedroid C1D2 for DNA75, tried my friend's droid and I love the size and grip of it.
Battery life is not the best but decent, if you fire between 15-40W should be ok for a day.
Non-DNA Single 18650 battery:
iStick Pico
Evic VTwo Mini
Non-DNA Dual 18650 battery:
Smoant Battlestar
Joyetech eVic Primo (read edit)
Personally, I'm rocking a Pico Squeeze with an Odis O-Atty. Simple, light, and giving me excellent flavor.
EDIT: There's an eVic Primo 2.0 releasing soon, they fixed some issues on the first version.
I recommend you to look up reviews for the items I mentioned above, you can purchase the items from www.fasttech.com if you don't mind waiting.
Happy shopping mate, if you have further question feel free to PM or drop a comment here.
Does your wick and coils gunk up very quickly bro?
i am using c1d2 combo with v5 and siren (SS coil + TC mode). but personally i prefer v5 over siren. Flavour tanks tend to gunk/cotton turn black faster because of the heat generated in small chamber. i have tried various kind of juice, usually cotton will turn black with creamy juice. juices like naked however will not gunk or turn black easily, not sure why.