The PD-A530 are really the only option for you. There is the clunkier PD-M324, but it'll look weird on a road bike. The PD-A530 look fine, and much more importantly, work well. The flat side is not grippy though, means you'd prefer good non slipping rubber soles. I have them and like them, but I've grown so accustomed to being clipped-in that I wear SPD sneakers whenever there is a chance I'll get on the bike. Some of them look good off the bike, and the occasional "click" of the cleat hitting the pavement is not dramatic. Unless you run marathons of course. Once you become a clipped-in addict you'll prefer dual side clip in, to stop fiddling with the pedals each time the light turns green.