See my review of NB645 shoes.  I was somewhat hesitant about purchasing a non-rated shoe from Amazon.  However, I took a chance thinking that this model was simalar to the NB645 model.  I haven't been disappointed.  Great support, good fit and I expect to get at least 6 months of wear or better.  I generally walk between 25 and 40 miles per week.  I use a Spenco Polysorb Cross Trainer insert and this seems to be the perfect combination to keep my Plantar Fasciitis in check.  In fact, I've used the same insert for two pairs of shoes and still get good support.