hi all, i've been running in saucony kinvaras for long runs and saucony a5s for tempo/track days and racing, and i'm finally getting to the point where i need to find a replacement (i hoarded many pairs of a5s after realizing that saucony was pivoting towards softer and cushier for everything pretty much : ). i've tried the a6 and find them to be too soft w thick unresponsive sole and very little spring. do any of you have recommendations on a comparable replacement shoe model?