Got this today and the Berserker remains my favorite.
Biggest issue: the chamber side piece (with the wicking holes) doesn't fit on the deck right. I had to use a significant amount of force and a screwdriver to get it in and a bit of the oring is bulging out a bit over the edge - so that o-ring will be trash.
2. Noisy
3. Tight drip tip hole
4. Superfluous screw next to the airflow piece.
Otherwise the vape quality is good so it gets the number 2 spot under the berserker.
I had problem with the chamber side piece but not original one (with round smaller wicking holes) but with optional with bigger oval wicking holes... changed "O" ring and problem is gone... I suspect problem with drip hole being too tight can be also related to "O" ring on drip tip too "fat". On my Dvarw all my drip tips even from other tanks fit perfectly.
I do not know what you mean about Superfluous screw next to the airflow piece???
Draw on my Dvarw is quiet but I use only 2 mm insert so do not know if smaller berserker style give noise.
One thing I can complain is that threading on my is not very smooth (when I screw the deck I have to go back and forth and sometimes I feel a little noisy resistance... I like the vape quality (flavor and smooth draw) in this regard it wins over my Doggystyle but I do not like look... for me it looks kind of ugly and cheap... I love the look and simplicity of Doggystyle but from all my RTAs Dwarw competes for second place with Savour but first place still belongs to....... my Siren2