Originally Posted by
embankmentlb
I fully realize what I am about to say could cause a huge flame war. For me, the invention of SPD pedals and especially the hidden cleat is one of the best developments that has happened to the bicycle. Sorry Tullio.
I don't know about "greatest", but I sure see a lot of "vintage" bikes- old lugged frames, Campagnolo Record, etc., with Shimano SPD pedals. It looks a little incongruous, but being able to walk in your bike shoes is very very nice.