They are designed to work best with dripping atomizers. Many Max VG liquids won't perform well in most tanks as the vape juice is very thick and doesn't feed very well. These max VG vape juices do work well in the new squonker mods. Just fill the internal squeeze bottle in your squonk mod with the max VG juice, give it a few pushes to feed your RBA, and you'll be enjoying highly flavorful vapes.
There are even some e-liquids that claim to be very close to 100% VG. Naturally, it's impossible to reach 100% VG once you add flavor or nicotine. Still, anything above 90% VG will do well for you if you love those high VG juices.