Thanks for your input Frick. I am trying a Boge 3.0 today and it's much nicer (IMO) than the Smoketech DCs.
Glad you like them, as I do, but everyone has their own "sweet spot". Dual-coils just don't do for me what Boges do.
Frick, I am sure that you understood but I am sure about the rest of the people on this thread.
On the other hand it is a mystery to me why you can get the same amount of vapor and not use the same amount of juice. Not doubting it just don't understand it.
Let's not say "the same amount of vapor"; let's say "as satisfying a vape", if that makes sense. I'll adjust my Provari to whatever gives me a vape I'm happy with in warmth, vapor volume and throat hit (and these are all subjective depending on the juice, so know that I've tried both with my beloved Halo Tribeca and Boba's Bounty).
I have to run 2.5 ohm dual-coil cartos at 5V+ to get there, and I know that's because the wattage is split between two 5 ohm coils in parallel. I run a Boge 3.0 at 4.4V pretty much all day, upping it to 4.6-4.8V in the evening.
I know that doesn't explain juice consumption, but the Boge isn't going through juice anywhere near as quickly -- and I know, because I'm using a tank and can actually measure with accuracy how much juice I use and how often I have to fill. Maybe it's the drags I have to take to feel satisfied on the dual-coils, which do seem considerably longer.
Horizontal coils give improved vapor and flavor because of a wide airflow tube inserted into the filler. Not sure what Frick is using. I don't get similar vapor from a single vertical coil vs dual personally, although flavor is typically improved. It's typically said however that anything below 5 or 6V just doesn't have the oomph to power dual coils to their potential. I don't know. Just know personally, my overall experience is vastly better with a single horizontal coil over any dual coil even horizontal dual coils.
I vaped horizontal-coil KR808D cartos for a year. I have KR808D cartos sitting here from Bloog, Volt, and Halo. The airflow tube is actually wider on the Boges than it is on the 808s, but maybe you're referring to different horizontal-coil cartos.
I'm using Boge LR and SR (2.0 and 3.0 ohm) cartos.
Unless designs change pretty radically, I think I'll remain a single-coil vaper. I'm getting the same vape quality at lower voltages with less juice consumption (whatever the factors involved). I'm quite happy with the Boge cartos.