Just received my C model this morning...without question the most flavor from any device I've tried so far, this thing is fantastic.
I had been using a T model for 3 months and although it's kept me off analogs, 2 packs a day for 25 years, the flavor, or lack there of was getting very frustrating, the C model blows the T away in the flavor category, and vapor production is outstanding, I am using the K-Go batteries and that probably helps in both these areas.
I tried various methods with no luck, carto's , carto tanks and direct dripping...none of them produced the quality of flavor this C model is delivering...
I have to say in addition...the carto's scared the heck out of me, a hit of that burnt poly-fill material was terrible and can't be good for you, I don't see the attraction to them at all.