The best of the Asics line I have worn so far.  I do a lot of walking on concrete and on trails.  I also do Turbo Jam (kickboxing, dance based cardio) and strength training.  Being taller and "heavier" than the average woman I have always had issues with back, knee and ankle injuries as well as shin splints.  I was introduced to the Asics line when I would run in college and have found them reliable.  The Gel-Exp3 offer great shock absorption as well as lateral support for any of of the quick side to side movements that may be required when I do my workouts.  They are a bit wide in the front for a great feel.  Being on my feel all day they eventually swell but I still feel comfortable.  I was even able to wear them after recovering from a sprained foot.  There are also two stabilizing nodules located in the heel that kept my foot in place and didn't slide in and out when I went from a regular to a power walk pace.  The Gel-Exp3 are also light weight and would probably be more durable if I didn't wear them to work as well.