We researched this extensively, and decided upon traditional Medicare with a supplement. A great resource is The Medicare School. Medicare advantage can refuse to approve care, and Medicare cannot if you go to a provider that accepts it. Here is a good video to start. I know people are very happy with their advantage plans but I also know people who have their care choices limited or denied. My husbands Medicare part D is free and he has yet to pay for any meds.
https://youtu.be/5OmK94JRerc?si=d_AATncnyQvKmFNB