Run what you're comfortable with.
I do find the big shift from manifold to ported occured when people were looking for fuel economy and manufacturers were looking for better emissions numbers.
My Savoy has no vac advance. That's a new wrinkle for me, but it'll give me something new to study. Any increase in knowledge is beneficial, sometimes even fun.
I come mostly a sport car and Corvette background. One of the tuning gods in the old Corvette world, Lars Grimsrud says to go manifold vacuum 99% of the time in these old cars we love. And let's face it, the engine doesn't know if it's in a Corvette, a Yugo, or a kikass Max Wedge Plymouth. I tend to agree with Mr. Lars.
I'm running 52* total advance in my 1965 396 Corvette. I define total advance as Initial (on the balancer), centrifugal (from the distributer weights), and vacuum (from the can on the distributer). I know y'all are knowledgeable enough to not need that, but many folks refer to total as just initial and centrifugal. Never saw much sense in that, as it leaves a significant variable out.
I also run 52* total on a 400ci small-block Chevy engine I built. It's about 500-550 horse and torque. Runs great at that level of advance. Still, I'd love to have an extensive dyno session to really dial it in (in all aspects).
Right now, my Savoy needs that worse.
So, run it how you're comfortable, and satisfied with the performance, whether you measure that by power, fuel economy, emissions or any other metric.
Most importantly, enjoy your car. Enjoy every part of it. Driving. Wrenching. Racing. Cruising. Showing. All of it.