I’m looking to buy a pair of Nike Zoom Rival M 9’s however I can’t find any reviews or anything online. I owned a pair of MD 8’s and they were great, best spikes I’ve ever owned for the 400/800m. Does anybody have any input on how good the M 9’s are or have a pair themselves?? I would love some input for the 400/800m. (Might consider just buying another pair of MD 8’s too)