Choosing my RTA

[Netop]

Not exactly sure what you mean by backflow (discoloring of juice at the end of the tank?) but that is not occurring with my KM3.

That is what I mean. Happens to me on SubTank mini as well as others. Didn't happen to me on KF4, so I figured it was because the juice doesn't go directly to the wick from the tank. Thanks for the answer.

 

[evan le'garde]

The Kayfun V4 is on the big and heavy side, but...
It vapes nicely. It's easy to work on. You can fix a build without losing the tank of juice. Refills are a breeze. But My favorite bit about it is that the way the juice flows from the tank to the wick, there is no back flow because the juice goes down, then back up. On many other tanks, the juice flows directly from the tank to the cotton through a little hole or channel. When your cotton gets all gunky, that motor oil that was once juice can flow / seep back into the tank. Even after you re wick you are left with half a tank of crapped up juice. Not a problem with KF4. Another bonus is that if you don't wick quite right and you start running a bit dry (or vape VG outside in the winter), you can unscrew the top part, breaking the seal, eliminating the negative pressure in the tank and allowing for juice to glow to wick easier.
Also, for a traveler... Shut juice down completely and no leaks even with pressure changes.



The KF mini3 has many of the same features, but in a smaller package. I don't own one (yet), but I THINK it has the same ability to shut down juice completely for airplane travel. I don't know if also has similar juice flow that mitigates back flow. Maybe an answer will appear below.

+1 for the Kayfun V4. "The" Best RTA for MTL vaping for sure. My goto on my Provari.