I am still learning on my mb and have spd pedals. My mb club leader kept telling me to stay clipped in on technical bits and fall with the bike if I fell - that to clip out and ride clipped out on the pedal can be cause for an accident - and that sticking a leg out at the wrong time during a fall could break something. Did I listen? Nope. Tried to clip out during a rocky upgrade, and in the twisting out action fell with the bike on to the left ankle and busted it. In the middle of nowhere. So, lesson learned.

When I get back on the bike this fall, I am going to look in to some of these other pedal options, as the left twist thing is no longer going to work for me. But I know now what I didn't then. I plan on staying clipped in through as much as I can from now on. I also like the idea of the flat pedals with pins. I may have to try those out.

Thanks for the great advice and to the OP for posting the question!