I assume you haven't gotten the PT2 mini yet. When you do you should have both a 1.8 and 2.5 ohm coils so you can try both to see which one you prefer.
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My EVOD stock tank started seeping juice around the windows after 2-3 days of vaping a watermelon local juice.
Annoyed, I got myself a nice little protank 2 to put on the EVOD stock battery.
So my EVOD kit came with a box of 2.2 coils, and the Protank 2 came with one 1.8.
I swapped in my 2.2 slightly used coil and it works just as good as with my stock tank. When this coil isn't good anymore I'll just put it the 1.8 and vape on it.
Choosing the right coil is a matter of personal preference, not a matter of knowing if it will work or not.
The draw on the protank2 is a lot airier than with the stock tank so I drag very delicately on it and I get a good, hard hit with great taste.