I run Kayfuns on my MVP2's. They are both 1.4 Ohm builds and they work great! I've gone as low as 1.2 ohm but I find they work best between 1.4 and 1.6 ohm. You will be in love with the Kayfun's if you get one! The taste of a dripper with the convenience of a tank!
The EHPro Kayfun Lite in the middle on the Launcher Mech is almost always on the black MVP2. The silver MVP2 has a Tobeco Kayfun Lite+ with a clear "M" tank. If you are going to get a Kayfun I would suggest an EHPro or Hcigar (they arer better quality then the Tobeco, IMO).
Another pic...
Every tank in that picture has my own hand made coils!