I've been using it for several weeks now. Capacity of tank is 3.0ml but realistic capacity is more like 2.5ml as you can't fill it 100%.
Pros:
100 watts (with conditions) thanks to:
Huge wicking slots
Good airflow vs Subtank and Atlantis
0.5ohm head has good flavor
Nice machining/quality. Zero oil but I still washed it first
Cons:
Realistic peak wattage is more like 70 watts. Anything higher and the vapor is uncomfortably warm and flavor is out the window due to:
wicks fast enough for 100 watts but doesn't have the airflow to deal with that 100 watts
Only 2.5ml usable capacity
Gaps in tank frame to fill tank are ridiculously narrow, you're going to be cleaning juice out of the tube if you try to fill quickly
0.2ohm head has subpar flavor
Tank glass is narrower than caps leaving sharp edges exposed. (Ironically I cut my finger just this morning taking it apart)
Tank base has too little to grip when base is hot. You're gonna be ...... when you chain vape it dry then can't refill cause the base has expanded from heat and the airflow ring is spinning like mad. Tip: insert a small screwdriver in the airslot so you can hold the airflow ring.
Availability of tank and heads is still really sketchy
Other: I started with the preinstalled .2 ohm head. After allowing juice to absorb for a while I hit it. The flavor I got was so Atlantisesque meh I almost shelved the tank immediately. I figured the coils needed to break in. These heads have a steep break in period. Flavor didn't appear until I was through at least 2 tanks. Even then it was still meh. Like I was on a coil that was already a month old. Not bad but super muted at all wattages. Forced it for a week to at least get something for the $$. Then I swapped to the 0.5ohm head and OMG the flavor jumped out hardcore vs the 0.2. Almost Subtank levels. Maybe I won't be giving it away after all.
Most of the cons are niggles and only surfaced with extended use. Half wouldn't bother or be noticed by most but I'm trying to be thorough. Flavor was never "good" on the 0.2. Flavor peaks from 35-45 watts on the 0.5 depending on the liquid. I make and vape rather complicated juices and heat destroys the nuances. Your tastes obviously may be very different.
Next up: The Freemax Starre! (This one is making the Arctic's cons stand out more.)