Vapor and flavor is based upon the VG, not the nicotine strength...throat hit is based upon the PG, not the nicotine strength...nicotine strength is only to satisfy your bodys use of nicotine from smoking tobacco cigarettes (analogs)..a Marborolo Red = 18mg (medium)...a Light cig = 12 mg
I myself prefer a 65PG/35VG or even a 50/50...U get plenty of vaper out of a 30-35 VG...and a great throat hit (TH) from a 65-70 PG
Vegetable Glycerin (VG)
e-liquid is a thick, a little sweet liquid. VG e-liquid produces luscious clouds of vapor. VG e-liquid also imparts a sweeter taste to your liquid.
Propylene Glycol (PG) e-liquid is a much thinner liquid. PG e-liquid produces more of a “throat hit” than VG e-liquid does, which simulates the feel of smoking better. PG e-liquid also has a higher rate of sensitivity for some people, meaning that some people just can’t use PG in their vape.
PG e-liquid tends to give you a better throat hit and a lot more flavor. VG e-liquid on the other hand, allows your atomizer to produce a lot more vapor. Now, VG e-liquid is a thicker and more sticky fluid, and although most people do not show signs of allergy with VG, there are minority groups who complain about having phlegm buildup in their throats. The more VG e-liquid you use, the less of a throat hit you’re going to get – that’s the general idea.
60%/40% mix of VG and PG in your e-liquid can produce great vapor and more flavor. If you like, you can tend to use mix of both PG and VG in particular ratios, such as 70%VG/30%PG. This is the optimum ratio for most each uses as it provides a nice throw hit, good flavor as well as tons of vapor production.