Speedplays differances
Zeros are your best bet. The X series at this point is a legacy system for people like me who don't want to change pedals on a bunch of bikes.
The cleats on the Zeros are better, and the ability to adjust the float solves the objection of some that there's too much float
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.