The more PG and Nic the more throat hit. Pg tends to carry flavor better so some max vg juices will suffer from muted flavor. I like my juices to be less than 30% pg but some pg is good to carry flavor. I know of some that are 80% pg and you certainly don't want that on a sub ohm setup. You could possibly go as high as a 50/50 blend but you will have to test and find out what you like. Anything more than 6mg on sub ohm is not a good idea IMO
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