Originally Posted by Andy_K

I've got Planet Bike Cascadia fenders. They do well enough that I haven't felt motivated to replace them. My rear wheel is usually covered in grime and my feet get a good bit of road spray, but otherwise it's mostly the rain coming down that gets me.

If I were going to buy new fenders I'd probably go with SKS Longboards because they appear to have a slightly longer mud flap than the Cascadias, but it's not so much longer that I'd buy them while the one's I have are in working condition.