These are hands down the most comfortable work shoes I've ever owned.  I have been wearing this shoe (well, this model) for fifteen years and this purchase marks my fifth generation.  Over the years the style has undergone subtle changes but this latest has a clean look.  As a consultant I wear them hard, upwards of fifteen hours a day through airports and walking from hotel to client.  As the math suggests, I average about three years per pair.  I get my money's worth every time.