At first I was not going to order this model because of the lower star ratings, but decided to give them a try.  I think the main reason for the lower star ratings is because of the sizing issue, not the shoe construction itself.  Thanks to all who gave sizing comments.  I normally wear a size 6 tennis shoe and my feet are slightly narrow for a regular 6 B.  The size 6.5 B of this model fit perfectly!  The other reviews are correct.  Go up at least 1/2 a size for length and if you have normal or slightly wider feet, you may need to go up a width.  These are just as comfortable, if not more comfortable than my former Gel-Nimbus.  Glad I read the reviews!