I have been using these pedals for 2 years and race and train with them on my CX and fat bikes. These are solid and reliable. For racing they clear muddirt very well. For riding in the snow recommend spraying the cleats and pedals with cooking oil to prevent the snow from sticking.
I run these on my road bike and the build quality and smooth rotation is what I have come to expect from Shimano. This is the third or fourth time I have purchased these pedals for my road, tandem and mountain bikes.
I have tried other pedals and none works better than this Shimano product. Easy to clip in and out and they wear for ever with no problems. Some like others, but not this dude.
I use these pedals on a road bike because I like to be able to walk easily in my cycling shoes. These pedals are great looking and so far function very well. I have high hopes because my old Shimano SPDs have given me 21,000 miles of service and the only complaint I could have is that my sweat drops make them rust. The 8000's have the appearance of being stainless so I hope the rust will not be a problem.