Tried on all different kinds of shoes, including the Kayano 17 but preferred this shoe over them all. It had a gel feeling that the others simply didn't have, like walking on a firm pillow. I had shin pain and no longer get it with these. As the previous poster stated, the diminishing returns on the Kayano 17 make this the best choice for people who don't have severe foot issues, the only difference between the two is the 2160 acts as a BMW M5 series while the Kayano 17 is like a M7. I strongly urge you to make your first purchase at a local FAMILY owned store that knows what they are doing and can do numerous tests on your feet.