Went out and ran 11 miles first day in these shoes.  Didn't have soreness anywhere in my legs or feet the next day.  I hadn't had a gait analysis in a long time, so I went to my local running store and they convinced me to go with a neutral shoe.  Very glad I did.  Seems my slight over-pronation is virtually gone now according to them.  I was running in 2160s previously.  The Gel Cumulus feels a little more cushioned than the 2160s as well.  I have fairly narrow feet and these shoes fit very comfortably up front.  The rears don't slide on my heel either.