When this thread started back in January, I was riding with Look pedals and cleated shoes. A couple of months ago I switched over to my old commuter bike and just used the flat side of the platform/SPD pedals. I was pleasantly surprised that it felt pretty good. My commute is only about 6 miles each way, and I have not noticed much difference in the time. Like others have said, it is nice not having to deal with changing shoes just for the commute. I wear whatever shoes I plan to wear that day at work. One less thing to keep up with, and I like to keep it simple. ;-)