Whats up everyone. I'm new to the forum. I am also new to the world of road/commuter cycling. I am moving to the city soon and I had just bought an SE Lager from my LBS because i got a superb price on it. I love it so far. I am riding it fixed as of now but I'm still a little sketchy with it. I used to ride BMX, so i so used to having a freewheel. My questin is, for what I'm going to be doing, which is using my bike as a commuter to class, is riding a fixed cog or the freewheel more efficient? I'm a little concious about crazy city streets and having to skid stop in emergency situations. I'm not too worried but I just want to hear everyones opinions! Thanks !