I just got mine, so far I've used a Boge F16
tank on it (with F16 LR carto @~3.6-3.8v), and currently using a Vivi-Nova 2.4O with trimmed wicks(@4.2v). Both have worked remarkably well. Once this Vivi is empty I'll be trying a regular carto which is unknown ohm (I'm guessing it's mid 2's by the kit it came with, not written so v will have to be tweaked).
All in all, anything I've slapped on it has worked wonderfully once I get the wattage right.