I looked into the 510 Pro DCTank (thanks to Baditude for that link), and it looks like a good price point. I like the idea that I can more easily experiment between dual and single coil carts, and the Propylene is on par with my current ProTank. There's even a somewhat decent collection of colors to choose from.
Having said that... I also stumbled onto a review of this same tank by PBusardo. I don't know if this was planned or not, but he did manage to highlight something that I hadn't even thought of with the cartotank set up: separation of the tank from the carto. Juices got everywhere, cue the gratuitous cussing.
Mr. Busardo did also include a couple of cartotanks from a couple of other manu's, and highlighted how they wouldn't separate.
One thing that he does mention however, is that the DCTank is easier to fill up than most standard cartotanks. It's what makes it easier to fill that also leads to potential separation.
Despite all of this, I'm still thinking of giving the DCTank a go. The price is good, it comes with 5 cartos, so I'd be good for quite awhile. Given the propensity for separation, I would just have to take smart precautions when I carry it on the bus with me.
One other thing I considered, is that the video itself is now 2 years old. Maybe SmokTek has worked out those kinks, maybe not.
I think I might just give this tank a go anyway. I feel like it would be a good comparison against my Pro-Tank BCC just to see if the cartotank method really is right for me.
I'm also digging the new Iclear I30s from Innokin. I got an older Iclear 30 with my Itaste, but I hated it with a passion. Had to replace it due to serious leakage, but second tank had same problems. So, I chucked it in the trash. Was kind of disappointed because I had been wanting to try the top coil system, and when it worked, I did like the warmer vape of dual coil. But at $3.50 for replaceable heads, it looks to be a more expensive venture to maintain in the long run. For that matter, the cartotank method will likely generate additional expense, but certainly not at $3.50 for ONE atomizer head every week or so...
Anyway, just some updated thoughts.