Most used - Apollo E2 900mAh with Kanger T3's; Boba's Bounty.
I have 2 CE4's with Twas Brillig, Zombie Apocalypse.
I also have a Kanger T3 with White Rabbit.
(2) Kanger Pro Tanks with Boba's and RY4
I have 2 Apollo 900mAh Twists on the way from DV, along with a couple 5 packs of T3 coils, 2.4-2.6....so depending on how the Twists drive the 2.4 T3's and the ProTanks.....may change, may not.
The 2 things I don't like about the ProTanks:
1. Heavy.....makes the rig top heavy and easily falls over.
2. Cold tip.....that stainless tip is really cold on my lips.
Other than that, the PT's are great....but the T3's perform just as well, are light weight, and the plastic tip is nice and warm.