95% of throat hit comes from two things: warmth of the vapor (bigger battery PV's) and higher level of nicotine. More PG vs VG, adding PGA and different ingredients in eliquid only account for the last 5%. Good throat hit is NOT a burning sensation which is all you get with additives such as pepper extract to site one example. I think you would have had to have vaped different PV's at 3.2 volts, 3.7 volts, 5 volts and variable volts and with different atomizers/cartomizers and different nic levels to experience the true difference in good throat hit. If you are only looking for a small increase in throat hit, then an additive to your liquid such as PGA, may do the trick. If you want truely good throat hit that is consistent and “warm” not “hot”, then you need a good 5 volt or variable volt PV. Low resistance attys are a good intermediate step to increase TH, but in my experience they do not hold up well and cannot be used on certain PV's.