The information in this thread shouldn't determine anything negative about KEO pedals/cleats simply because the user is not aware that everything on a bike wears out, god forbid your cleats should too!

KEOs are as good a pedal as anything else out there if you use them properly, if you want a clipless setup to ride brakeless then SPDs or Time is your choice but even then you're likely to have an issue because these pedals were not meant to be used for riding brakeless.