After 15 years of achilles tendontis and years of failed physical therapy, I finally found a physical therapist who looked at my whole alignment and rethought the whole extra cushioning in the sneakers thing.  I had been wearing ASICs anti pronation motion control running sneakers thinking I was doing my feet a favor.  She had me walk barefoot and noted that my alignment was pretty good, fairly neutral in terms of pronation, really not too bad.  My trouble was my clenched up calves and probably my "high healed" running sneakers.  I took out some CDs on running form, stopped striking with my heel, read about barefoot running, started going barefoot around the house, and bought a pair of Kinvara 3s.  I wasn't ready to put much mileage on barefoot, but I needed something supportive for my active life style--hikes, dog walks, basketball, soccer, some shorter distance running.  The Kivara's fit like a dream.  No more crunched up toes.  No more high heels.  I can feel the ground but still have support for running and playing sports.  I forgot my cleats one Sunday and played soccer in the Kivara's in the rain.  Slid a lot but my achilles felt great.  Switched to these for basketball too.  5 or 6 weeks into the season I noticed that my achilles weren't tightening like they always use to.  I'm using muscles in my feet, have sneakers that offer protection but don't add extra material where it isn't needed. My feet are never tired at the end of the day.  At age 43 I'm in great shape and back to playing all the sports I love.  These sneakers are a second skin.  The protection I need, an excellent fit, and I can do anything in them. I wear them all the time.  I'm going to buy a bunch of these to keep me going for the next few years.  Hopefully other sneaker companies will start to realize just what a wonderful thing the human foot is.  So glad to have finally found a pair of sneakers that support without getting in the way of the natural motion of my feet.