I have been using this exclusively since I bought it and I cannot put it down. I can honestly say that I think this is now my favourite RDA and I have a LOT. Building on it is pretty straightforward (follow DJLsb's tips on YouTube) and wicking is really simple.
The design of the deck and airflow is really, really clever. Air comes in the sides at a 45° angle, goes under the deck (which is raised above the base) and then comes up from underneath the coils. Basically a bottom airflow, but from the sides. The juice well, because there is nothing blocking it, takes a LOT of juice and so far, not a drop has leaked. I would recommend keeping the air holes to the right and left as you vape, just in case you have over dripped/squonked.
Flavour. Oh, my, days. The flavour of this is outstanding. It really is. I can taste so much more from my juices that I did before.
I love that there is a tab to stop the barrel from spinning. This should be standard on all RDA's. The AFC ring tolerance is perfect.
The only con I have is that it can get quite hot if you chain vape. I would guess this is because of the amount of metal on the deck, but it's certainly only a minor con.
It's that good, I'm buying a 2nd one.