Um... How harsh a throat hit are you exactly looking for? I think a "thump" isn't going to describe any kind of.... e-cig device that I'm aware of, necessarily.... Maybe you need to talk to the DIY coil builders and other options? Even 100% p.g. liquid at the HIGHEST strength you can get, it's not going to appraoch what a cigarette feels like. Did you manage to get the throat hit you "wanted" on any device? IDK much about the pure grain alcohol option and personally I can't imagine INHALING that, but you may want to investigate it?
I'm just confused at this point EXACTLY what you are looking for, and if you have achieved it EVER in the past? Because, there aren't going to be little men with hammers thumping your throat. E-cigs aren't like cigarettes. If you are looking for that, you won't find it, I don't think.
That said, there are lots of GOOD things about e- cigarettes, and it may involve stepping out of your comfort zone? Personally, I think you should try sub-ohming at higher wattages with mostly VG juice, and see if that mimics more of what you want? Have you tried that? I mean, mouth to lung is great, sometimes, but there IS a harshness to sub-ohm huge vapor clouds at lower nicotine that you may find you like better? I'd try that, if you haven't. I know it sounds paradoxical but with the right flavor, you may actually find it's more "concrete" in a way, especially if you do it say, 10x in a row. I'm just.... saying. It's an option. But, good luck.
Also, is the "perfect" throat hit worth throwing in the towel on e-cigs? You may find with some changes, you aren't getting exactly what you "thought" would satisfy you, when otherwise.... no?
Did you try something kinda out of the box like a JUUL for a while (super high nic) and now you're disappointed with refillable options? I'm just really confused, here.
Anna