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pg is thinner, tends to carry flavour better and juices higher in PG have more of a throat hit but the vapour isn't as thick or long lasting as VG
VG is thicker (100% vg is quite thick, afaik a lot of juices that are 100% vg are actually mixed with 10-15% of deionised water as otherwise it'd be like trying to pour honey into your atty), doesn't carry flavour as well and tends to have less throat hit but really kicks out strong thick vapour tthat hangs around for ages like actual smoke