I have these pedals on two of my bikes and they function perfectly. I am impressed with sturdiness, functionality and reliability of these 'entry level' pedals. I am not a weight weenie and not concerned about how much or little the pedals weigh, I am just happy they work well.
Best value in clipless pedals. Only difference between these and the other SPDs is weight.
Not great for track, but they do work. Best for commuting and MTB. Fine for road biking. I wouldn't recommend for track. Otherwise, buy 5 sets and put them on all your bikes---only one type of cleats to deal with.