I'm confused, @ivc_mixer you said "correct" to @MK_AHMED's guess of the Joyetech Ego One?
This photo of your tank bares some resemblance to the Kanger Pangu but the airflow ring and top cap are dead ringers for the Melo 3 Mini
That's a kak excuse, what price do you put on your health? What does chemo cost, how much does a heart bypass cost, what even do a new set of lungs cost? :wondering:
Sure you can, I have been running my Zeus X with a single coil since I got it. The trick is to use a 4mm ID coil so that you have enough cotton to fill up the juice channels.
The Nitecore Q2 and Q4 are perfect for 21700 cells with room to spare, avoid stuff like the Efest Luc V6 unless you're only going to use 18650s, there is no way a 2x700 cell fits in there.
They are both great cells for your application, either one will be just fine. Get the cheaper of the two, or get the 21700 for less chance of battery rattle, or get the one which has the most appealing colour to you :)