I think you misunderstood what the "word" is on the street about the "Subtank Super". It isn't going to be a different tank or a larger tank. It's most likley going to be the same tank with the correct insulators installed. Some speculate that they may have redesigned it to not have the screws at the top of the tank to tear it town. But that is just a rumor. But my point is, kanger does this all the time. They rush a product to market with a flaw (and they know it because the redesign is already in production which is evident by ho wfast the redesigned product makes it to market after the first release). Then, after a couple of rollouts, they release the "improved version" and then rename the product to make the market think it is new, when actually, it's just the final version. In other words, they release "pre-market" products to the public, then they immediately release the final product under a new name once the kinks are smoothed out. This is kanger tradition. Just look at their coil heads (not the OCC, all the clearomizer heads) and you can see what a messy confusion they created among both consumers and resellers as to which coil heads work with which tanks. Much of this confusion came about from all this "improving" that should have been done before market release. Then they go and rename things and that adds to the confusion. Go look at 5 different retail sites and even Kanger's own sites, and you will not get a clear answer as to what coil head will or won't fit whatever Kanger clearomizer you have, especially if it is an older model and especially if you're new or kinda new to the Kanger game.
This is the Kanger way and I for one have pretty much been turned off by them at this point.
Just sayin'.
@Jazzman: The 25mm design was made in order to look nice on their new APV box mod, the K-Box, which is 25mm at the 510.