Yes, most devices are about standardized to the 510 connection. Just with the Kbox Mini, Kanger for some reason has a variance of being a bit deeper than the rest, so the 510 male connector on a tank needs a protruding or adjustable pin to make contact to the Kbox pin when deciding on another brand tank, the Subtanks being a Kanger product will have no issue. Good idea of understanding needing more than just 1 of anything when it comes to vaping, not only do multiple flavors fight off eventual vapers tongue fatigue, but back ups for times when something fails is always the best road, trust me it sucks not having a vape when you are having a nicotine fit something fierce.