Medicare Part D...who to choose?

It seems its that time of year that those on Medicare have a chance to pick a new Prescription medication plan. This has to be done by Dec 7th.

There are many to choose from: Blue Cross, Humana, United, Mutual of OMaha, AARP, etc.



Has anyone researched this to try to see who might have the best plan? I know the prices are all the same, just wondering if there is any real differences between all the providers.



Thanks