Rondeb:
If you go to Medicare's website, or the Washington Insurance Commissioner's website, you'll find comparison charts of what supplementals are available. For a given plan "Letter", like A, or D, or F, the benefits are the same. The premiums might vary, and the provider choice will, too.
Having spent a lot of time on this, and after one of us tried an Advantage plan (cheaper, but a real PITA sometimes), we stayed with Premera in Washington. Covers almost all docs and hospitals, and has almost complete out-of-area coverage. I've been pleased with them for almost 3 years. Slightly higher premium, but worth it.
Drug-plan-wise, WalMart/Humana plan made the most sense for us.
Most distressing to me is that TriCare, which is what most Vets (those we owe the MOST to!) is such a lousy outfit for the docs to deal with, so many don't take it.
