I run M324's on my Surly and have been happy with them. The platform side is much more like a traditional platform with plenty of grip.

They don't look very aggressive, so if you are looking for a sleek aero appearance these are not the pedals for you. I went from traditional SPD-SL pedals, and it took a little getting used to (i have to flip the pedal every once in a while to get the correct side up).

I have a friend who runs A-530's on his commuter and he put grip tape on the platform side and I really like them, but I'm not going to upgrade when my M324s are working fine.