New Balance does it again.  I speed walk 2 miles a day, 6 days a week.  I do my walking on the streets, not on a treadmill because I love the outdoors and the hills.  I've been using New Balance walking shoes for the past 5 years, and I usually replace them every 1-1/2 years because I wear out the soles.  The MW928's are the most comfortable and best made of the lot.  I just purchased my second pair so I'll be ready when I ready when I wear out the first pair that I purchased 2 months ago.