I'm using 4 parts Propylene Glycol with one part 100mg nicotine in a PG base. VG is WAY too sticky-sweet for me. Buying the 100mg nicotine is the best newbie move I made, believing that The Flavor Apprentice "Tobacco" flavor would actually taste like tobacco was my worst move. I started at 2% flavor and it was like a was trying to vape standing in a well-stocked, unventilated incense shop. If anyone has a proposal for another un-sweet, un-perfumey STRONG flavor that I could mix with the "Tobacco" to keep from wasting it, I would be grateful.