I've been running in Mizunos for over ten years now! The past few years I have ran in the Wave Inspires, but used to get the Wave Riders. I have heard great things about the Altra's, Jason. So I will have to check them out! What is your opinion on rotating shoes? A coworker at my last job, who was an avid runner, kept two to three pairs of the same exact running shoe. His theory was that he would switch off between them, so the cushion would have time to go "back to normal" in them before running on them again. I had never heard of this. Typically I run in one pair for a few months, or until my feet/knees start feeling weird, and then I buy the same pair again!