I've just replaced the DC carto in my
tank with a fresh 2.0 ohm CE2-style carto from Madvapes, and so far it's stellar. It's too early to say for sure, but if the performance continues to be this good (at 3.7V, but also great on an Ego) it will become my default vape. Note that, as far as I know, these CE2 replacements aren't dual coil... they just fit in a dual coil
tank.
The coils in these things are recessed deep in the tube, unlike a typical CE2. I think this might give the condensate an opportunity to cling to the tube walls and drip back onto the coil. Either way, I'm getting less condensation in my drip tip than with a dual coil carto on the tank.
About the cone-shaped CE4s that lynch pictures above: also just tried one of those for the first time tonight, and the report is less good. The vapor production might be the best I've ever had on an eGo, but there's almost none of the flavor you expect from something int he same family as CE2s. I connected it to a eGo Twist and tried a range of voltages, and nothing helped the flavor. I would have been pretty disappointed if I hadn't then discovered the CE2-style DCT replacement.