Ive never got the hang of rba's. I think Nova tanks alter the flavor of it too much. So, believe it or not, I still use carto's. I feel like I get the best flavor out of Vision Fluxomizers. However, theyve been discontinued and replaced with a brand called Phoenix. Its pretty much the same thing, but the wires are inside the air tube. Its a top coil system that looks like a carto version of a Nova, but the flavor is inexplicably better. Im still on my first set of the Phoenix, so I dont know if they have the same longevity as the Visions did. ANYWHO, I burn a 2.8 ohm carto at about 4.2-4.5 volts. To me, that is perfection.Whats ur favorite way to vape House Blend?