>>717314179
>I've played 15, 16 and 7r
You've only played THE worst shit on the market.
Not exaggerating.

4, 6, OG 7, 9 and 10 I can recommend to anyone.
Out of those, classic 7 is often the most safe bet. It's a beloved title for a reason, being perfectly paced, easy to pick up and play, challenging enough to keep more experienced people entertained.

After that, choose your poison. Since the stories and worlds are (usually) not connected in any way, you can pretty much shoot blind. Different things appeal to different people, and that's also why there's so much arguments about various titles in the series.

I for example really liked the FF XIII trilogy as a whole, but I know that many bash it as the worst blunder of the millennium and death of the series.

The ones I would personally recommend skipping are the NES originals (1-3) and the MMOs (11 & 14). I also wasn't too fond of VIII and XII.