Strengths: Heel and forefoot Gel cushioning makes this shoe very soft and comfortable under foot. The improved space trustic also makes this shoe more stable without being a support shoe. Very comfortable asymmetrical lacing.
Weaknesses: Expensive, although you do get what you pay for with the Nimbus!
Overall: A great shoe for neutral runners doing high mileage or heavy neutral runners.
Strengths: Light, fast and extraordinarily responsive thanks to the Active Membrane technology. Exceptionally light for a training shoe. Encourages and enables transition to forefoot running and is cushioned and designed to specifically suit this style.
Weaknesses: The upper,due to it's lightweight design, is not as resillient as other uppers.
Overall: A brilliant innovation in running. Unique!