I never got a head rush, low resistance helps with TH as does a good menthol (which is what I smoked). But if you look back, I sure was scrambling for ideas on how to get a TH, my wife wanted it more than I did, I think the rush as well. Being a weekend smoker she probably got the rush from oxygen deprivation not TH off the first cig of the week. I tried higher voltage but the ego with a low resistance carto or atty is pretty good.
I did 0mg for health reasons (also have to remember to apply for non-smoker status on insurance, I think it's half the cost). In retrospect it certainly makes the FDA stuff a little less stressful to me. I'm pretty sure even if I lose all my hardware, I wouldn't need to go back to analogues. The burning urge to smoke/vape at least every hour disappeared after I went to 0mg. Now triggered only by stress and drinking, and even then sometimes the battery is not charged and its no big deal not being able to. Some peoples brains are just wired differently, what worked for me may not for someone else but I always suggest folks give it a whirl. There was zero stress for me while I did it, dropped about 2mg every week or two and lost the urge after two weeks or so at 0mg. Around 5 or 6 mg/ml is where we lost the TH and that was nasty, we kept going, wife complaining all the way. Once low resistance showed up I saw a big smile on the wife's face.