Hey I am thinkin about getting one of these. I have the Supernova Cushions now and they are ok, but I feel they are a little bulky and heavy. My friend just got a pair the Response Cushions and says they are lighter than he thought they were. Has anyone tired either of these? I have not seen the Adizero tempos in person, but they look more like a lightweight cushioned trainer than just a tempo shoe and I think the weights are relatively the same as the response cushions.