I use one sided SPD's with Specialized Tahoe shoes. The shoes are all-day comfortable and walkable. I may switch to double sided someday, but for now the one-sided pedals work pretty good for touring and family camping trips, as you don't need the SPD shoes for the platform side of the pedal. Personal preference I guess. But as a former toe-clip snob, I must say that the switch to SPD's is a serious wake-up call, especially when climbing hills.