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OP, I would say it really depends on what you wish to accomplish.
Personally, the PADI AOW seems to only serve the purpose of getting a cared that says Advanced on it. That might help with some dive ops, but if your goal is to actually learn something, then it’s not the best route. PADI AOW is intended, although maybe not clearly, to expose the diver to some additional specialties, without completing those specialties.
My advice is to go dive. Then figure out what you want to learn/improve on. I’d be shocked if there wasn’t a course available for whatever it is.
That said, a Nitrox course is not a bad idea as a next step. I got OW certified in 1990, then again in 1997, and EAN in 2004. For every tank I’ve paid to fill since then, it’s been an EAN mix.
AOW course started on No.16 logged dive.
Take one step at a time and there is NO rush. Just remember this is mainly a recreational sport but also one of the few that will kill the participant.