I think she might be referring to a CE2 (although I might be wrong):
510 CE2 Cartomizer XL
I've never tried them, but I did try a CE2/poly-fill hybrid carto thingy from Vapor Phoenix that I did not like at all. What I especially didn't like is that he doesn't state on the site that they aren't regular poly-fill Smoktech clones (which is what they appear to be in the picture). I emailed him and said they were burning at a much lower temp than they should be. He said they do much better on an eGo. Heloooo! I bought the higher resistance to use on a mod.
For me, the best flavors are:
Dripping
Bottom-feeder with a dripping atty
Carto-tank
Bottom-feeder with a carto (the flavor might be more than a carto tank, but I find the carto tank easier)
CE3 XL clearos (but they only hold a little bit of juice)
Everything else. I use a Protank a lot, but because it's easy, not because of the flavor
Wow...that just looks like a headache waiting to explode!