From my experience, there are two main types of hit, lung hit and throat hit. Also, inside these groups, there are many types of hit depending of the subject. For example, PGA and menthol gives me a good TH and lung-hit but I know other people that tried the same juice and did not found any TH. My conclusion is that the TH is very personal so we need to customize the formula. At least, in my research I found that TH is obtained with some combinations of PGA, menthol, cayenne/pepper, cinnamon, and some acids like lactic acid. By the way, I have read a lot about Atomic Cinnacide from Tasty Vapour giving a good throat hit. I'll give it a try as soon as I can.