Very easy to get out of. You can set the release angle at either 15 or 20 degrees depending on which way you mount the cleats.
The little platform is kinda useful to take a quick dab at the pedals before clipping in, but it makes it harder to clip in than with the standard eggies.
They do have float, but be aware it has centering force (and you will notice it compared to SPD!). I have a dodgy knee and have never had any problems with them, though some riders have reported bad knee pain (but I think this was mostly road riding).
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