I have been waiting for SPD power meter pedals to come out for years and now I finally have a pair. I recently purchased a bike with a built in power meter after buying these pedals for my previous bike and I switched these pedals over and use the data from these pedals while riding my new bike 2/2 to the advanced power metrics available while using Garmin devices. I haven't figured out how to use the metrics but hopefully as people look into the metrics we can figure out how to utilize them to train smarter and more efficiently
I just received my pedals i bought on special over the Memorial day weekend special. The function is outstanding i just with they were about $200 less. The only other downside is that they are heavy as lead. I normally run titanium Xpedo's so these are triple the weight. I'll use them training, but not racing.
I have these mounted on my Gravel/Cross bike. They installed easily and have worked without interruption on two races and a number of training rides (maybe 500 miles so far?). They are expensive, so only "reasonable" in value for me.