i just bought a pair of Shimano click'rs - almost a zero learning curve with these - easy clip in and clip out due to lighter spring action. but i have no experienced any accidental unclipping. Depending on your riding style this could be a good starter in clipless for you - i cycle in the city mostly and i am not racing or jumping boulders - was a good experience as i have never tried clip or clipless before.
the pedals were a bit clunky Shimano PDT400 Clickr Pedal - weighs like a ton because of the dual sided clips - platform-ish but i do like them.
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