I recently went through this decision process. I chose Medigap, for several reasons. I almost always had private indemnity insurance. I just didnít want to go to gatekeepers or anything of that bs now. My FIL is 92, he recently needed heart surgery. He went to Cleveland Clinic, although he lives in Maryland. Why? The Cleveland Clinic docs were somewhat less likely to kill him in the process of fixing his heart. Also, if you plan on RVing or traveling in the US, Medigap goes with you- as does traditional Medicare.
Since Bush is trying to move us off Traditional Medicare, I figure that in itself is one good argument for Traditional Medicare.*
I am sure it varies a lot from state to state; but I almost always will opt for control.