I currently run in Asics Gel Kinsei 4 and absolutely adore them. I wanted to try these Mizuno's, but couldn't justify paying $190 for the Asics and just a few months later $200 for the Mizuno's. I finally did it (Happy Bday to me) and am SO glad. These feel strange at first. They make a funny noise when you walk and you do feel elevated. They feel firm and you wonder how great the run can feel on such firm shoes. I certainly felt a spring or bounce when I was running faster. I ran 6.3miles with quite a bit of hills and have to say these shoes are great. I'm not going to stop running in my Asics, but these Mizuno's will be my long run shoes without a doubt. They do feel a bit heavier, but my legs feel terrific and I have been having some quad and hamstring soreness lately... not today!

They actual upper is nice and airy... I felt plenty of wind on my feet during my run. I use a metatarsal insole so I just removed the ones that came with the Mizuno's. The toe box is snug, but not tight. The lacing system feels good and my foot feels hugged. The inner ankle bone does come right to the top of the shoe so it feels a bit funny, but I run in Thor Lo running socks with arch support so no abrasive or tender feeling.

I wear a street shoe size 9-9.5 and ordered a size 11 in these. They do run quite small. My other running shoes are 10.5 and these size 11 feel like those 10.5s. The color is great.  A nice dark shoe with bursts of a deep, berry red. Not to mention it's just a cool and funky looking shoe.