The 5.5ml Phat Tank from Vaporescence will match pretty well for diameter.
If you want ridiculous juice capacity, you can go with the 8.5ml BFT from
the same place. COV carries the 1.5 ohm DC carto, but you'll have to punch
the hole your self. They carry the mnf punched with the flange, but they
cost a little more.
For straight carto vaping you can go with the Boge 2.0 ohm ( warmer vape ),
or the 3.2 ohm ( cooler vape ). Some juices taste different/better with warmer
or cooler vape. Just remember, lower ohms means warmer vape.
Thanks a lot for the info and the links!!! I appreciate it. I will be getting one of those tanks but they are out of the black right now. Once again, I appreciate the feedback!