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Click r have low tension, supposed to be aimed at people who are scared of not being able to clip out.
M454 and M545 are both shimano spd pedals with cages (plastic and metal, respectively), have used them both (as well as the click'r), they are good if your shoes aren't thin, where you can feel the spd parts protrude up above the cage.(Apparently there's also m647, not tried those...)
Khornight2-
Click r have low tension, supposed to be aimed at people who are scared of not being able to clip out.
Never had an unwanted unclip with mine, and I'm not afraid to pull up hard on them. It was something I was worried about when I first got them but it's proven to be an unnecessary worry.
Bonus is the Click'r pedals having built in pedal reflectors, so no questioning that aspect of legality when riding at night.
Greenbank
Or try the Shimano Click'r SPD pedals. Double sided SPD pedals but the bindings push flat and are perfectly fine in normal shoes.
I have the PD-T400 version (in black) on my hackbike and they work perfectly. One or two days a week commuting in SPD shoes and one or two days doing other rides in normal shoes or astroturf footy boots.