DCTs? I had one. I threw it away. But that was before I found out that dual coil cartos aren't worth a darn on anything less then 4.5V. They're a cheap tank. They hold juice. It's the carto that's inside that matters. If you use them with low voltage, you'll get crappy vapor. Granted, you'll get twice as much of it. But 2 x crappy still equals crappy.
So, you need to find a 1.7 to 2ohm punched carto to put inside it. Then hold onto it because it's a bit slippery. You really need the flanged cartomizers. I saw some 1.7ohm flanged and punched Smoketech "Ressurector" cartos somewhere, but I can't remember where. Maybe CrystalClearVaping? If you use those, you should get a good vape.
Whatever you do DON'T use dual coil cartos. They are NOT 1.5ohm. They are two 3ohm cartos inside the same tube. Only the total resistance is 1.5ohms. It's like trying to boil one pot of water on two stoves, each set at half the boiling temperature of water You'll use the same amount of electricity, but you won't get boiling water.
The Vision Clearomizers are a far better vape than any carto based tank though. And at $5 each, they're a better value than buying $2 replacement cartos for the DCT. They last far longer than any cartomizer. If you punched your own carto's you could make it cheaper to use the DCT than the Vision Clearo, but the vapor and flavor still wouldn't be as good.
Like I said before, the battery itself on the Riva is not bad if it's the 1000mah one. But it's all that other useless junk, like the tank and atomizer, that you're paying for and that most people jettison in favor of something that actually works.
