I just received my adiZero Rockets. First, they seem to fit just a little bit snugger than the adiZero Pro. My 9.5 Pros it well over any distance, but I think the Rocket 9.5 will get a little tight for longer runs 15 miles to marathon. Most would probably prefer the snugger fit for 5k-10k racing.
The heel:forefoot ratio is excellent. And while there is a small torsion bar, they have a great flexibility. There is a fairly firm heel counter, but it doesn't seem to be a problem. Finally, the rubber outsole seems to have great spring and I won't cut my ankle like I do with the plastic outsoles on the Pros. In conclusion, these are damn nice and they will probably become my preferred shoe for training and racing.