Honestly, these three models differ mostly in looks and in what the rider is used to — in short, it comes down to taste. Among the genuinely practical differences, storage capacity tops the list: the Nmax suits riders willing to give up some storage space in exchange for its riding position and dynamics. And on pure dynamics, there's a running joke on our team: if you actually want that "Turbo" responsiveness, grab the ADV instead — it subjectively feels punchier than the model that actually has "Turbo" in its name.
Ideally, before committing to a bike for the long term, ride each one for anywhere from 5 days to a month to really feel the difference. 1-3 days is often not enough to truly get to know a bike.
Model pages: Honda PCX160, Honda ADV160, Yamaha Nmax.