I've crashed with every pedal type. Anyone who's experienced chain-suck on a steep climb knows that getting out of clipless is faster than reaching down and loosening a toestrap as you fall over sideways a la that old tri-cycling fart on Laugh-In. My worst pedal crash was using plain rat-traps with no attachment: a pothole bumped my foot off the pedal, my nards were gored on the top tube and the pedal came around and ate my ankle.

Stick with the clipless....for efficiency and, ironically, safety.