I had read lot's of
reviews saying how fiddly this thing is..and it is super fiddly with Boros..
but I actually like the feel of it in my hand more than the bb or the pulse.
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I can't tolerate my two Supbox AIOs for very long.
juice condenses all around the two (top and bottom) halves. Then without warning, you have juice pouring out the seam. That tank in your pic looks ok and there is enough room for air. But SXK's own tanks and some others cuts off most of the airflow and then it gets the air from the seam instead.
I must say it is light and comfortable in the hand though.
My two favorites are the Pulse AIO for light weight and the Abyss AIO LE DNA60 (both allows 21700s). The Abyss I never have to take it apart except for rebuilding or changing the coil. If condensation builds up and you hear gurgling, just tip it airflow down and blow into the drip tip onto a paper towel. And that's it!