I am a heavy guy - 240 lbs - so I need shoes that provide extra stability (or "motion control") and can take the impact of my weight.  I am a long-time fan of New Balance because of their good arch support, so when I saw this running shoe with motion control in the name, I was intrigued.  My very first impression after trying them on was that the arch support was not New Balance-esque - very flat.  The shoe doesn't feel like a new running shoe should, either - it isn't springy.

I've tried this shoe now for a few months and I am largely unimpressed.  Feels old and dull on my feet, and my arches hurt after longer walks/jogs.  I won't buy another NB running shoe as a result.  I do like NB walking shoes, though - the 645 was one of my very favorites.  Hope this helps!