At the moment it is my AGA T2 rebuildable atty on the Provari. I'm primarily a cartotank vapor, but since I finally have the AGA set up perfectly I'm preferring it.
I have seven IBTanked pyrex
tanks going simultaneously, each with their own flavor. I also have a couple other pyrex
tanks besides the IBTanked in the rotation. One is a custom tree frog tank from High Desert Vapes and the other is a Hoosier Vapes Elegance tank. I use either Ikenvape 510-Fusion or Platinum cartomizers.
The are Provari "rings" and caps called the Hippo that cover the coned top end for a cleaner transition of some delivery devices. There is also the Z Atty Pro, a high end rebuildable atty that was specifically designed with the Provari in mind. Also a few cartotanks designed to look especially well on a Provari. These would be from Kir Fanis and Vaporfexion.