Vivi Nova with a 3.2 ohm head or Phiniac tank with 3 ohm Boge carto and set to 5.2 - 5.6 volts. I hardly notice the carto taste. Either I'm used to it or my juice empowers it. I don't know. I'm more on the tank carto side. I find myself having to remember to tilt before a hit with the Vivi, which I find it to be such a drag.
If you google Hoosier Vapes (links won't work here) you can find some very similar tanks to the Johnboy lava tanks and there are generally some in stock at all times. Depending upon when you visit they will have larger selections. Available in two tank lengths (Bella=35mm and the Elegance=45mm). Glass tubes available as an option. Acrylic and stainless steel. I have their Elegance tank below paired with a Phiniac sandblasted pyrex tube.I hear you on this one. Usually it is good when it is filled right below the wick but a lil further down it gets to the " tilt" stage. It does become a drag but I still like the tank. Especially because the tanks I have been looking at are either rare like the johnboy usmc lava tank or expensive like others.