Strengths: Very light and responsive. Enough rear foot cushioning for up to 10k at absolute maximum, or 5k for heavier runners.
Weaknesses: Only points letting it down so far would be the stability and the fit (more than likely i bought wrong size)
Overall: Very good racing shoe for short distances, especially 5K / 5 mile, although be careful when wet as I have found that it provides very little grip on corners.