Strengths: Very light-weight and extremely comfortable with a nice feel on the foot from day 1
Weaknesses: In a word - Durability my last pair lasted less than 200 miles and I am not extremely heavy (I weigh around 13 Stone). The forefoot could do with more cushioning.
Overall: I loved these and trained for and ran two half marathons in them with no blisters, black toes or any other problems. However, they do not last long enough and having to replace them so often is just too expensive.
Strengths: Very Light and comfortable, plenty of cushioning
Weaknesses: Could do with slightly more cushioning on the forefoot.
Overall: My first pair of proper running shoes which took me from 'run for one minute then walk for two' to a half marathon. No blisters, no black toenails and no dramas. Have tried other shoes but ended up in another pair of Mizuno's