Those thick, dark juices do gunk op the coil pretty fast. But until that happens, 100% VG juices will work in the Stardust. Just remember to tilt and roll it frequently to keep the wicks wet. Also, make sure to get the rebuildable version of the Stardust (EGO Vision). Otherwise, you'll be trashing them at a pretty good clip. Rebuilding the heads is not a big deal at all.