I have always run in Asics, but thought I would try a different brand based on these reviews of Mizuno running shoes.  After the first 3 miles of a 9 mile run, my feet were killing me.  I actaully turned around and went home to put on my Asics.  There is very little cushion for the ball of the foot and the back of the shoe is pretty high which was causing friction on my heel.  Like the other reviews say, the shoes do run a 1/2 size small.