I want to get some dual platform pedals on my hybrid. I like the SPD on my road bike, but I want to be able to use regular shoes as well on my hybrid. Looking at these two pedals from Shimano, can anybody weigh in as to which is "better?" The A530's are about 200g lighter. I can get them both for the same price. Something I'm really wondering about is does the non-SPD side on the a530's afford good traction, and what is the difference in the two pedals as to how they hang with gravity?