Thanks New Balance!  I made the switch to the WW846 Walking Shoes about a month ago and I can tell a difference.  I was reluctant to spend the money for a more expensive pair of shoes, but I felt I needed to be kind to my feet.  After a month I can tell my posture is better while walking and a whole different set of muscles are at work.  I can't believe how much more I enjoy a nice brisk walk.  My feet also appreciate my smart investment.