I gotta be honest, I don't really notice *much* faster delivery time, as I said, I use them for the smoothness of the throat hit. I've often combined regular nic (from my storebought juices) with my DIY juices, and I notice very little difference. I don't so much get nicotine "highs," but I do get satisfied by vaping enough nic over the correct period. I don't think I'll ever get that type of "headrush" high that I occasionally got with cigs (if you smoke enough of *those* you really don't get it much, either) though once I started vaping, if I ever smoked a cigarette, it would kind of remind me of when I used to get them, early on... Which is the reason if I pick up a cigarette, I'm going to need to smoke several, to remind myself that doesn't last. Then, I would have a nic hangover, the next day. Not really worth it.
I think though, with nic salts, the differences are slight enough that you may not really notice. Though, Juul makes this claim, and that does seem to be the cigalike that a lot of smokers enjoy, but at 50 mg/100 ml, you'd BETTER be satisfied....
Anna