My wifes GR4s are worn through and will be replaced on warranty...after 4 months. She had an exclusive color wave so Im assuming she can now select any shoe she wants since they are no longer available. The GR4s didnt last very long but I assume they are about as durable any other nike or adidas. So we'll buy some shoes locally and also swap these out through TW. Also, they get so soaked and dont dry out soon enough so my thinking is that she needs to have atleast 2 pairs and just rotate them out. As far as rotating shoes, is it better to stick with identical pairs that will wear the same and feel the same for the most part? Will swapping between differnet brands/models affect her footwork or foot "health"? Just wondering...are we overthinking here? shoe wise, shes looking at the latest nike and adidas lines. maybe the speeds but I wonder if they are less durable than the GR4s.