I bought these cleats, because I'm using Crank Brothers before.
I've had previously used another brand, and had had problems with knee pain. Snce using these cleats, the pain is completely gone.
It also allows you to have some freedom of movement in the foot, and that when you enter a curve, allows you to deal with it better because you can better modify your posture when cornering.
When hooking and unhooking, is very intuitive and simple.
It costs more than other brands and wear before, but I think they have a more quality worth paying.
Excellent, far more adjustment than the free Cleats which are included with the pedals. Gives me the extra moment I needed to get me feed in the right spot, not cheap but they last years!