I smoked a pack of American Spirit Lights (Yellow) a day for years, then switched abruptly to Njoy King bolds (4.5% nic - disposables) for two months. They had a good throat hit and good buzz but were very inconsistent and very, very expensive.
I'm about 5 days into using a PV now and started at 1.8%
juice thinking it was going to be too low. I had to go down to 1.2% the next day and picked up a bottle of 0.6% and now I switch between those two and am getting plenty of nicotine. I'm also only going through about 1-2ml of juice a day.
Due to the sheer volume of vapor being inhaled I find a pretty low nic level will still get me nice and buzzed.