The site really allows some VG at 15% or extra VG at 40%.
I am still bit confused about the VG/PG thing. VG is more the vapor smoke, and PG is more of the flavor?
Yes, VG produces more visual vapor and PG allows more of the flavoring to be sensed. The amount of throat hit (TH...sensation in the throat) is usually proportional to the amount of nicotine in the juice. PG allows more of that sensation than does VG at a given nicotine level.