what kind of atomizer? most ego threaded attys (aerotank, genitank, nautilus mini, etc) don't do so well with 100% VG, unless you do "primer puffs"...I normally run 70vg/30pg through them with no issues (and I chain vape. lol)
if you're looking at buying, i really like an istick 20 watt with an aerotank. I used to HATE box mods, but the istick 20 is so small, it doesn't feel "boxy". lol. Plus it's got a 2200 mah battery.
I don't use it much anymore, but sometimes I bust it out and let a new vaper borrow it.