I had a pair of spdr535? or something, the lower end ones. I was using specialized sport road shoes and completely ripped the cleat out of the shoe in a sprint. (says something for the pedals). I think the screws could have been longer. I also used the spd-sl 540's great pedals! Im currently on speedplays which feel allright once you get used to the ice skate thing. I would like to try a pair of looks though.