UPDATE: thank you everyone for your help + for replying so quickly! i've ordered from fasttech (and swapped to the innokin zenith d22 instead of the nautilus 2 because of the bullshit aspire payment issue). leaving this up in case anyone else has a similar question in the future.
hey folks!
context: i'm somewhat new to vaping, and i'm looking to upgrade my setup. i've been using a joyetech ego aio for a year and a half now, and i'm frustrated by the low battery life and how finicky this device and its coils are. i've done a bunch of research, and i think i'm going to upgrade to an eleaf istick pico 75w mod + the nautilus 2 tank. (chose these because i want something small, discre