I went to The World last year with a friend. I had some new Reebok EasyTone shoes that I cannot say enough good things about. I have never liked Reebok before but someone in the mall was bragging on them so much I had to try them.
Let me tell you: it was like walking on clouds, my feet never bothered me for a second and my friend kept complaining about his Puma's to the point the I stopped in Epcot one day and said "Just switch shoes with me, no way it's that bad".
We swapped. I walked. I cried.
It was truly remarkable how much difference the shoes made.
I don't know if you are male/female, but I do know that right now in Dicks Sporting Goods (if one is near you) they have a huge sale on those shoes for women, my friend just bought us a couple new pairs for our trip and I'm thrilled.
If you happen to be in the mall try them on, it'll only take a sec, you'll see what I mean.
Also, I think JC Penny has lots of them too.