I use SPD style pedals on my commuter bike, and they have a reasonable amount of float. Not as much as some pedals but it's not like your feet are locked in place. The importance of float is vastly over-rated, and depends on each person. I tried some Speedplay pedals for a while, which have tons of float, and they actually caused me to have knee pains. I had to return them after two weeks because I was afraid they were going to cause knee injuries. More important than float is having your cleats properly positioned and aligned on your shoes and pedals.