I purchased this one and thought it gives good cushioning like the ultra tubes and also support that ultra tubes doesn't have.  I was wrong.  The front doesn't have cushioning and feel the road impact every steps.  The heels no cushioning, it my ankle started to hurt even when the shoes are new.  The support almost none and your feet rolls left and right.  After I put hard insole to support the heel and arch, it feels better but the front still feels a great deal of impact.  It is no better than any normal running shoes.