The E Go C has replacement heads. This is good for cleaning and keeping the atomizer in good working order.
A clean atomizer produces good vapor. A clogged atomizer means you have to pull very hard and get suboptimal vapor. I found I get headaches from this. It's not satisfying at all.
The E Go T atomizer is nice, but it will clog at some point. You can clean it, but not very easily or well. They are pricey to replace. ($9)?
Darker vape
juice will clog the atomizer faster so be careful. Of course, if you can clean and replace the heads, you can vape any
juice you like and only worry about replacing the head. The heads are 1-2$.
The E Go C is metal, so you can carry it in your pocket. Other attys, carts and clearos are plastic or glass. They will break if pressure is applied. Glass or plastic shards and leaking e-juice is not good.
Does that help?