I already use a Ego T type B Mega tank on a VV device and my SD MKII @ no higher than 4.2v, NEVER HAVE ANY DRYNESS
For HV usage I am using a HV 4.0 ohms XXXL cart...........I am researching Tanks for HV usage (alot of issues here)

I dont like the hassles of the DCT and don't need a 3 day juice supply on call