As far as performance with a heavy VG I cannot be sure of that as I vape our own blends which are 70/30. If anyone wants to chime in love to hear from you. I have experienced exactly ZERO leaking/sliming problems with these...we try to carry only the 1.8ohm version which works perfectly...
We have a very large restock coming in in all colors...

Danno, Is that the juice for which Braubly has stirred wiff his fingers ?

I also had never experienced ANY leaks from these. And if I wasn't a poor monkey, I'd buy 75 more units. In various colors of course