GrumpyGregry
Here for rides.
tried both. saw no advantage at my 'performance' level. wanted one standard across a fleet of 5 bikes so went back to SPD's with off road shoes. Prefered shoe+pedal combo for all-day-every-day riding is identical to HLaB's explained above but I can do 100kms on M520 spd pedals in my Tahoe's with no bother