So I think the question becomes, which pedal is the easiest to clip in/out for both beginner and advanced riders?
Given the EB have four sided entry, can clip in either rolling forward or backward onto the pedal, is a very open design that does not clog with mud, and has no adjustments to mess with other than swapping the cleat left or right to chose how much float you want, it could be easy to argue the EB's are a more elegant solution. Coincidentally, these are the same reasons that I continue to like this design. So far the only argument against EB's is the reliability, which I think Crank Brothers has worked to address in the design implemented about 3 years ago.
Reliability is a difficult measure when we are talking Shimano vs Crank Bros. Reports I've read about CB's reliability issues have been 3-4 years old, nothing recent. So from the limited research I've done, it's possible that the two designs are now similarly reliable. Which leaves usability, in that case I'd have to say CB wins our there.
Only some of us have tried both, and based on our experiences we have chosen one or the other, the good news is there are no bad choices out there. It's always nice to use the same pedal type as your friends so when they get a new bike, you can test ride it as well
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