The two advantages that the Kanger Protank Mini II has over the SmokTech Aro are a removable 510 style drip tip and a clear pyrex glass
tank with no obstructions or difficulty reading the level of liquid in the tank. Some lighter colored liquids can be difficult to see in
tanks like the Aro, Evod and MT3.
As far as performance, the Aro is at least the equal of its Kanger competitors.