I actually think I prefer the C-cells to the EUC coils, although I have to say part of it may be that I'm using the EUC coils in a Melo III tank that I am NOT fond of (especially the drip tip, I may try changing it out) but also capacity. I LOOOOVE the C-cells in a Wismec tank I found, at 1.0 resistance.
I think there were some early issues... or sort of... with worries about ceramic tanks but if they are well made, they do have longevity going for them.
I don't think you can vape TC with a kanthal wire in the coil, but I'm not 100% on that. You can certainly get ceramic coils that come with TC wire though, and some of them are easily rebuilt as well.
I think good flavor can come from ceramic cells, but it's their increased longevity that I enjoy the most.
With that said, an RTA and some good coils do the job just as well if not better....
Anna