Yo guys, here I am with my experience with this one.
Relatively new vaper here. I used to be a terribly heavy smoker (rollies and such, not even the regular pre-made cigarettes); vaping saved me, but I was looking for something able to let me use organic tobacco extracts and liquids and get a satisfying taste.
I was wary about rebuildable atoms at first... Until I met the Holy Hastur Mini.
First impression: the flavour and tight draw. Even with the medium airflow regulation, the Hastur REALLY mimics the cigarette draw well. And, oh, my, the flavour. I had tried a berserker as well, but this one beats it hands down. It's spectacular with single organic tobacco extracts or for flavoured tobaccos (single tobacco + different flavour). Really: if you use decent cotton (Kendo gold, for instance), it will blow your mind.
Second impression: the easyness. Really, it's so simple to clean up and assemble and even recoiling is a breeze. A newbie can pull this off with some easy prerolled 28 gauge, 1 to 0.8 Ohm Kanthal coils... But the choice is up to you. The deck is small, but not impossibly so, so rebuilding is not such a pain. The only downside I found is the drip tip, that is too tight even for my taste, but I see they already fixed the problem.
Third impression: the size and design. This is not a liquid-thirsty beast, but a nice lil' MTL, so no need to make a fuss here. You have everything you need in a small package that has a lovely, sleek, cyber-punkish design and will look great on almost any box. It looks whoppin' on my humble Pico iStick 75W, so do your math...
PLUS, it has Chtuhlu on it

It's a shame that it's pretty hard to find here in Italy, I was lucky enough to be able to try it in a physical Milan shop (officine Svapo, for the record). Hope the guys will be able to export their products more in my country.