Originally Posted by blu3d0g
+1 Shimano also makes silver cleats, but they're garbage. I used to pull out occasionally with those, black cleats put an end to that. I've been told that it's because the silver cleats are designed to be able pull straight out, whereas the black ones are only designed to come out with a twist. The cleats definately look slightly different, so it seems to be true.
Perhaps they've changed the silver ones because they are what I've got, the PD-M540's and there's no accidental unclipping; you've got to twist that foot with some authority.
Which Shimano pedals in silver are the supposed bad ones?
PD-M540
Cheaper PD-M520's come in black and silver
PD-M970 top of the line
PD-M424
PD-M545
I don't recommend these, they were on my wife's bike PD-M324