Originally Posted by
****zkid
1) Shimano SPD - I am not really knowledgeable with different types, I believe there's more than one. But it looks like its the "standard" for roadbiking as well as MTB. It's also nice that Chrome makes sneakers that are SPD compatible, definitely a plus.
There's 2 kinds - SPD and SPD-R. SPD is the standard 2-bolt cleat you see on MTb and Chrome and so on, the more 'walkable' kind. SPD-R has a 3-bolt cleat and is the 'road' type - more secure and better power transfer (from what I understand) but walking the the shoes is awkward.