Ok...so I stuffed one of these into one of my tanks and I have a few observations. I'm using the KR-808 2.6-2.8 ohm XL Clear Fluxos CE2-X with Gourmet Vapors Keoke Coffee 80pg/20vg.
1) What's that weird taste? When using my CE2 R4s, I can use them right out of the package with no weird taste, with the CE2-X I get a funky taste. With these being advertised as "Pre-Burned" I figured it would be ok to just fill and vape. It seems to be improving, but I think I will be rinsing and dry burning these before use in the future.
2) Why are the wicks shorter than the CE2 R4s? With the R4s in my tanks, the wicks would reach the bottom, these don't; they're about 1/16 inch too short. They seem to wick pretty good, but I'll see what happens when my juice level gets closer to the bottom.
3) Vapor production seems good, can't really say if it's that much better than the R4s.
This is just after about 15 minutes of use...I'll see how they do over time.