Getting ready (I think) to dive into clipless. Looking at Shimano 520s to start. Sounds like that's what a lot of people recommend to start with. What's the difference in the different models of 520s? There's the PD-M520, PD-M520MTB and PD-M520-L. Is there any difference between the three models? The Shimano website shows only the latter one. Thanks in advance for info/advice.
tkerr
tkerr