If at all possible, go to a specialty shoe store that caters to older people and those with orthopedic problems. Once there, look for an older clerk with lots of experience. That's what I did when we moved to a house with mostly wood floors and my heel pain was killing me.
What I ended up with for inside the house were these Haflingers:
http://www.zappos.com/haflinger-gz-c...-grizzly-black
The cork soles provide excellent cushioning. The clerk said that the arch support in them would relieve the pressure on my heels, and it did; I could actually feel the relief when I first put them on and walked in them!
For outside the house, I rely almost exclusively on Birkenstocks with their cork soles. Arizona is the style that works best for me.
My walking shoes have a slip-in cushioning support from the drugstore. My particular ones were discontinued, so I bought a bunch off eBay to have a lifetime supply. Had gone through quite a few others that didn't work well for me, and these did, so I don't want to have to switch!