I had to send back my asics gr4's due to wearing a hole through the sole in 5 months. When I returned them to send back, I bought a pair of nike zoom breathe 2k12s. Played 2 hrs in them yesterday, later in the day I did not have any of the usual stiffness/soreness (feet) set in after playing. even at work today in my business shoes, after at the desk for awhile, the normal stiffness didnt set in when i got up to walk around. Anyone ever have this experience when swapping shoes? Off the court so far I seem to not have any soreness.