Originally Posted by
BluesDawg
The A530 would not make a good substitute for the A520 imho. The A530 has a better platform on the non-clipless side for riding with regular shoes, but only the A520 has the sides that contact your soles and simulate the foot support of a true road pedal.
^Correct^
I saw both 520 and 530 on display side-by-side at the LBS yesterday FWIW, so the 520 does not
seem to be out of production.