After reading  many reviews stating that the v3 were a better shoe than the newer v4 , i was a little hesitant to purchase the newer v4. I have been wearing the v3 for the past year or so, everyday walking/ running 3-4 miles daily. I decided to try the newer v4 and much to my surprise, I actually prefer the v4 over the v3. A little more cushion, but basically the same shoe. I guess it's an individual preference, but I definitely prefer the newer v4. Great shoe!