Notes
First run with New Balance Rebel. I was surprised at how stiff there were went i bent them. I thought they would kill my Achilles, but they were fine. I think the stiffness is due to the propulsion technology of the shoe, promoting mid-foot/fore-foot running. It doesn't feel stiff when I ran in them.
The test will be to try them for a 20 miler to see if they will be fine for the marathon. It they don't work out for Boston, it will still be great shoe for fast workouts and shorter races.