Speedplay Frogs or Crank Brothers Candies. Although with the later, I had to cut away a bit of the tread on my one pair of mtb shoes that had a lot of tread. I used to use Speedplay X-series pedals and road shoes, but after getting used to the walkability of "mountain" shoes, I'll likely never go back. I wear Keen Commuter sandals on my Bike Friday (which is a road bike) with Candy SL pedals. They come in cool colors too, if that matters. Frogs don't come in colors but are superbly easy to get into and out of.