Uh-oh, I have both speedplays AND sidis. I've only logged about 800 miles on the pair, but so far, no complaints worth speaking of. I did clog one up the other day with some gravel, but it was cleaned out easily enough. I rode my brother's bike the other day outfitted with Look pedals, and found them to be somewhat difficult to clip in and out of compared to the speedplays. I'll stick with what I've got.