I may have mentioned it somewhere in all my posts, but earlier this year, Humana raised the price on their original "WalMart" PDP. That was so they could create a NEW "WalMart" PDP. If you're in the hunt for an inexpensive PDP, Humana's low-cost PDP (they use "WalMart" more for marketing, but WalMart is one of their preferred pharmacies) is available to those who can switch.
Personally, I do not suggest WellCare, but if you find their plans are better than Humana/Aetna/AARP United Healthcare/BCBS, go ahead and enroll or stay with them. Essentially, a couple years ago, my dad (who just turned 86) was hospitalized a couple times due to severe infections. After the second stay, WellCare denied his stay (ICU for a week, then regular hospital for a week, then a week in rehab) because they claimed he did not follow doctor's orders. The family appealed, and are obviously not paying more than the Medicare deductible. Once he got out of rehab, I changed him to Humana, he has no complaints other than denying a doctor-prescribed Rx (I let him know how to appeal that). So for me, I won't, but if you still want it, be ready to appeal of any denials.
TS