Don't get me wrong, I like good mornings. I'm slowing working up in weight. I feel much more comfortable with the old chain suspended ones, although I think free standing GM's are more beneficial.
mike, chain suspended and free standing gms both have thier benefits. chain suspend there really is no eccentric, you start from the bottom, like a deadlift. and free standing there is an eccentric, so its help my squat more imo.