a while back before i built my dream bike people told me you cant feel crank "flex" and i didnt believe them. so i bought sugino 75s because i wanted "stiff" and no flex... later on my beater bike i bought alien cheapie cranks. i now know there is no flex that you can feel. both cranks are the same. spending all that dough on 75s was a waste. but i'm sure there are people here who dont believe that.