'If you mid or front food land, or are training to improve technique, comfortable and positive feel.'
Strengths: Very light and comfortable. Positive feel for the road. They help considerably to improve technique. The flexible soles encourage you to get into a more natural position, and reduce the tendency to land on your heels. The comment in RR about no forward propulsion makes no sense to me. The shoes fit very well and the drive is extremely positive. I can only think that the tester is using a technique incompatible with this type of shoe. I bought this shoe (the Free Run 5) and raced 10k the next day without any problems.
Weaknesses: Running technique and style have to be changed. They will be no use if a runner is not prepared to take this on board. There is some cushioning but not enough to land on your heels and not risk injury. Changing to this style initially means working harder (my opinion) but you will go faster and it gets easier.
Overall: I would recomend them. Light and comfortable. Good feel for the road but with some cushioning. (I have the Free Run 5) Research and improve running technique first. These shoes are useless if you land on your heels.