I wore the Ghost 9 for about 6 months at work and absolutely loved them. The Ghost 10 is very nice but Im noticing its just a little subpar on the shock absorption which has caused my feet to fatigue faster than what Im used to. The style is great, I love the color, and they're breathable which is awesome. Ive decided Im going to get an insert to help these along and make them last longer for me. Overall Im still pleased with my purchase, I think the 9s just set my expectations too high.