Quote Originally Posted by ny biker View Post
I went from some kind of SPDs to Speedplays ("X" somethings) with no problem. I have some scar tissue in my right ankle from surgery, so I used to have to clip out of the SPDs by turning my heel inward at the top of the pedal stroke to avoid pain. However with the Speedplays the only way to clip out is by turning your heel outward at the bottom of the pedal stroke, so I had to really relearn the muscle memory. And it was actually quite easy to get used to.
+1 (came here to say this)

I guess turning the heel IN on the SPDs was a bad habit of mine and needed fixing anyway, but that was the only major difference I observed.

Oh, and I had the hard plastic covers for the speedplays that I brought with me on rides, so I could walk around in the coffeeshop without killing myself. I eventually decided to standardize all my cleats and shoes on one system and got rid of all my Speedplay/crank brothers stuff to use only SPD.

-- gnat!