I bought these to replace a pair of Pearl Izumi Syncros.  Very pleased with my purchase.  They are very light, but don't give up anything in the cushion/shock absorption department.  I'm a fairly light runner, 3 miles/5 days a week, and these work perfectly.  Per the advice floating around the web, like other New Balance shoes they do run big and wide.  I normally wear a 12 D and my the 11.5 D fits like a glove.  Highly recommended.