Bought these a few weeks back and have several rides so far. I really like the platform as it feels solid and perhaps even a bit better than my Look x-tracks on my other gravel bike. The pedals seem durable and I like that they are able to be rebuilt (time and use demonstrate if they are as durable as they seem). I can't decide if they are a good value or not. The weight is low, but they are only one sided which is something that I like, but feels like it should cost less.
This is my third set of stainless steel Speedplay Zero pedals. After 1100 miles on this set, it's still too early for me to report on longevity of the new sealed bearings. I had 30,000 miles and 25,000 miles on my first and second sets. They required periodic lubrication with a grease gun and were often messy since the grease oozed from the inside of the pedal housing. The bearings were fine over their respective lifetimes, but the pedal design did not have the stainless steel completely around the body like the new version. Hence, the hard plastic wore down over time. The new version seems to take more effort to clip in and out of the pedal than the older style. It requires me to be more focused on this maneuver, but it does provide more assurance of staying clipped in under hard efforts. Since I clip in and out a lot during rides, I appreciate the two-sided entry. I can quickly clip in and get up to speed from stopping at red lights or stop signs.
I run the pd-m9100 on all my gravel bikes but I wanted to see how the platform felt on a mountain bike. Very solid feel but the outer cage deflects the rock garden type stuff from hitting your shoe and knocking it off the pedal. So while they are a bit heavier than some other spd pedals they have the benefit of some minor protections. Few hundred miles on them already and don't think I'll be swapping to the m9100s any time soon. At this price these are a steal.
