Aetna Advantage plan for Indiana

Hi, I'm reviewing my health care and prescription insurance. I'm currently using Medicare and a supplement for my prescriptions.

My insurance agent has recommended the Aetna Advantage plan. My understanding is that once I moved to it it's extremely difficult to go back to what I currently have. I understand that the insurance will look at conditions and heart and all that business and Jack the prices up considerably if I go back or try to go back. So I'm trying to make an informed decision.

Has anyone had any experience with the Aetna advantage insurance plan for Indiana?