Polyester Taste Yuck!
Vaping has followed an evolution.
First we had Atomizers with a Carto Attachment
Some found the purest taste to be dripping on Just the Atomizer [No Cartridge]
Than Bottom Feeding was developed where you could Squeeze a bottle juice would come up from the bottom and saturate the atomizer, The taste of Dripping with more convenience.
Than they built the atomizer into the Carto. So it became one piece.
Than they figured out, punch holes in it for Wicking and put in a tank
Than came Clearomizers, Why are Clearomizers so popular. Because the Polyester in Cartos Tastes Like Crap. [Arguably].
Now I'll stay clear of RBA and the new Ceramic Materials for Wicking, not mainstream yet.
But they deserve mention for connoisseurs.
The Jury is out, will they improve the materials used in Cartomizers, if so Tank Cartomizers may survive and prosper.
If the technology remains the same, Raunchy Polyester fill in the Cartomizer than Tank Cartomizers are doomed. Clearomizers will rule.
With the advent of Clearomizers providing superior taste, but still being perfected, Cartomizers are old technology and will eventually become a much smaller part of the market. If they don't die out.