Same amount of juice, hmmm. I started with a single EVOD Pro with what I know now was a single crap battery, although high nicotine, it was frustrating. So juice usage was low. Setup sucked. Then got Primo mini with Aries Pro Core 2/3 weeks later, good batteries, at that point juice usage went up, but not really crazy about the tank. Next was a Berserker. Berserker had flavor, but just too tight a draw. That was all in the first 2 months.
I wanted more vape and more cloud from the beginning. My rotation is now Siren V2's, KF V5 & Prime clones and a Natalist clone. I think I had some combinations of these within 3 months. So my juice usage did go up in the first 2 to 3 months. Nicotine was still high, dreams were wild. I started cutting down on due to dreams. 16, 14, 12, 10, 8, 6 it went down pretty fast just to stop the dreams. I was afraid of too fast. But I probably could of started at 6 and not 20.
So my juice did go up from starting point, but no where near the ratio of nicotine drop. I noticed no difference when I hit 4.5mg/ml on my DYI and started testing a couple of pre made 3mg juices. I don't think I ever needed that high nicotine content, just flavor and cloud.
Current rotation, one Prime is just comparing SXK against Ulton.