If pulling in outside air is what you’re after and cost isn’t really an issue, then I’d go with the mini split. It’s usually the most convenient solution imo, unless your finished basement is fully below grade, then your mini split will need a pump to dehumidify, which may be noisy.

After talking with a few contractors, we decided against it because of cost. We can always open a window if we need fresh air. An ionizing fan could also be an option.

Edit: also worth noting, our basement temp never rises above 70, so an AC is never really a concern, and our dehumidifier has a built in fan to move air.