I've always been using the (slightly more expensive, it turns out) 'grip' version of these cleats. I didn't pay attention when ordering, but I now know the difference! Does the job on the bike, but I much prefer the grip version even for short hallway walks on tiles... Will make sure I get the right version next time )
Have used Look Keos for several years now. I like the greater float they afford over Shimano. If you do use these cleats, however, I suggest getting a set of the rubber cleat covers. They will last twice as long. You buy the models with the impregnated wear pads for double the price, but I believe these are a far greater value IF you don't mind carrying your cleat covers with you.
Great price, I prefer the most float I can get with LOOKs, the teflon material on the binding surface seem to make the float smoother, beware non-LOOK cleats, they often don't meet the proper size tolerances needed for good engagement and release.
