Jon Bearwrote a review of Shimano PD-R540 SPD-SL Road Pedals on November 27, 2013
Familiarity: I've put it through the wringer
I have the more expensive Ultegra on my bike and decided to put these pedals on my other bike that I do not ride too often to save some $$$. The RD-540's clip in and out very smoothly and other good power transfer. They do everything a clipless should at a fantastic price.
They do not look as nice as Ultrega, do not have all the added features and weigh a little extra, but if money matters then these are amazing value for money.