I don't have either of those, instead have PV. However, in the past I had an Advantage plan when I lived in Houston. I found it very limiting having to go thru doctors for referrals and difficulty getting appointments quickly. You would think in a big city there would not be that issue. You also have to use their doctors which is like going to a HMO. My brother was going to change but found none of his doctors were on the Advantage plan.
I live in a small town now and would not have access to many doctors if I was still on that plan. I have also been told by my insurance agent that once you are on the Advantage plans, you will have trouble changing to anything else in the future. As it is, with the supplemental that I have I cannot change policy holders since I have PV since I will be limited in companies that would pick me up and insured me. Hope that helps, but this is only my experience.