Strengths: Great fit for broader feet. Will last well over 500 miles if you are light on your feet.
Weaknesses: Brooks have changed the support of this version. I would strongly urge anyone getting these from version 8 to have gait analysis before buying - I did this after buying and had to return them because of over pronation caused by the changes made in this version. Probably only affects a small percentage of users but worth considering.
Overall: Still a great shoe but unfortunately incompatible with my feet is this version. Will hopefully return to them when version 10 is out.