I use LOOK pedals on my weekend recreational bike and I would not recommend them for commuting. They are too difficult to clip in and out of while riding in traffic. It does get easier with time, but it's still a hassle, particularly when you are having to start and stop a lot at traffic lights. The worst is having to start on an uphill. However, for long rides in the countryside on my fast bike, I love the LOOK pedals. In traffic, I'll take SPDs hands-down.