After reading a couple of the replies to my post where I said that all of my coils worked with all of my BCC atomizers I feared that I made a big mistake so today I finally went back to double check. I tried every single coil I had on the Kanger EVOD, the Kanger T3S, the DBOX PuriTank and the SmokTech Tumbler and discovered I was only partly correct. All of the Kanger T3S/MT3S coils worked with all of the atomizers, but what became confusing was when I went through all of my ProTank/EVOD coils - it seems that the majority of the ProTank/EVOD coils will work on the T3S, but not all of them. Around a little less than half of them also worked fine in the Tumbler; there were a few that couldn't even screw in to the Tumbler and the rest, while they screwed in to the Tumbler did not reach the battery connection. My thought was that maybe Kanger changed their ProTank/EVOD coils at some point fairly recently and that maybe the new ones would all work with the T3S and the Tumbler so I opened up a new 5 pack of ProTank coils I purchased around a month back to see what they would all work with. All 5 coils worked fine with the T3S but only 3 out of 5 worked on the Tumbler.
So what did I conclude from the hours I spent on this little experiment? Well, first thing I realized is that it is next to impossible to see the difference between ProTank coils and T3S coils - seriously, if you have both, put them side by side and try and tell which one is which. Next, if you'd like to purchase a SmokTech Tumbler but are hesitant because you don't want to spend the money on SmokTech coils, don't worry! If you already have several ProTank/EVOD coils a few of them are bound to work with it, also if you like you can just buy T3S coils and they will work with not only the T3S and Tumbler but also with the ProTank and EVOD.
If anyone reads this and finds any inaccuracies in any part of what I wrote or would just like to add something, by all means, please do - I'm not perfect. But I do hope that this helps out any of you out there who have the same bottom coil compatibility questions I did.
-John