i have both of em - and like both - arctic requires a bit more power, dependent, of course, on which coil you are using in it - I am using the .2 ohm coil and vape it at about 55-65 watts... the Kanger is a great all around tank - works well for me with the .5 ohm coils at 18-25 watts... just started using the RBA after modifying it a little (drilled sides of barrel for better juice flow directly onto wick - there are a couple of vids on youtube about doing the modification) and enjoying that also... Arctic - somewhat better vapor production, good flavor, small tank (2.5 ml?)... Kanger - good vapor production, good flavor, larger tank (dependent on which variation) along with RBA option... also, with the release of the Kanger Subox kits, they look to have revamped the replaceable coils some, making them vertical and they have gotten good initial reviews (have one on the way, will field test it this week, hopefully) and those coils are, I believe, compatible with original Subtanks also... for me, I think Kanger is better everyday carry but enjoy vaping on the Arctic at home