I was a Time Criterium pedal guy for many years, but then I switched to SPDs for their walkability. I use Shimano A520s on most of my road bikes now. I like their elegant simplicity (I polish off the large logo), and the ease of getting in and out of them. For bikes that I might occasionally want to ride with street shoes, I use these:
They're Wellgo C002S pedals, available in silver or black. I like them better than the equivalent Shimano offering because they're lighter, have a lower sole to spindle distance, and produce a lower Q-factor.