I bought these from my lbs when i got my bike, and they are my first clipless petal. The cleat/shoe interaction is pretty simple and straight forward. The engagement action took me a little to get use to, but it is becoming somewhat natural. I never question where i am "clipped in" or not, there is a definite click, and an instant engagement. The float is nice, but i think cleat placement on the shoe is more important to comfort than float. If anything happens after i put some serious miles on them i will update, but from initial use, i expect them to be the typical high shimano quality and perform well over their life.