I have only had them for a little less than a week, but I love the way these feel.  I loved my vibram Five Fingers, but one of the toes blew out so I decided to replace them with these shoes.  I love it because I can wear these out and about without people commenting on my "alien" or "monkey" feet.  I have noticed a lot of soreness in both my anterior tibialis muscles, but I assume that's to be expected.  Wearer, break them in with ease.  Don't go out and run a marathon in these when you first get them.  I definitely have a lot of strengthening to do in my feet before I go about wearing these on a regular basis, or before I do any running in them.  Right now I just use them for walking, and running on my elliptical.  So far, so good!  I love the colors too!