100% VG ...... more vapor I believe, but mainly for those that dont like/allergic to PG
100% PG ...... less vapor (Stealth
vaping) or for those that dont like/allergic to VG
And the combinations are endless, depending on personal choice, flavor, etc.
Biggest problem with 100% VG is it's THICK and I do mean THICK. lol
Thats why some cut it with PG or PGA, I just havent gotten around to trying it yet.
p.s. Pure VG does have a sweetish taste, dont know for sure about PG