I'm typically a low mileage runner (5-10 miles a week) and have tried many different more expensive shoes in search of the perfect shoe, especially back in the day of training for longer races.  Nothing I've tried has compelled me to buy a second pair until this one.  as the other reviewer said, NO break in time, I just put these on and ran out.  I do, as with all other shoes, put in an arch insole, as my feet crave more support there.  They feel good and am going to purchase another pair before these get discontinued and I can't find them.

*Update* - July 2012 - three years later I am still using these shoes.  Stocked up and rotated the ones I had,  still low low mileage.  Just received the latest version of this shoe and the design still holds up fine, felt great out the door (padded of course with my ratty old Superfeet insole) for the short run.  Very glad it is still around.  May still need to stock up.