The RealFlex shoes aren't bad.  They are really light and pretty comfortable.  I can't really say anything bad about them, but when I compare them to my Brooks Ghost 4 GTX or Adidas FreshRide I don't think they are as good.  I did get them cheap ($69), but I would never pay the $110 I have seen them go for.  I would not by the shoes again, but like I said there really isn't anything wrong with them, I think there are just better products out there.