+1 for Conti GP4000S II I've been running nothing but them for years and get really good wear and service from them. I had the unraveling problem long ago with early GP4000S, not in a long time. Also I won't run latex tubes they don't hold air well and you have to pump them up all the time, plus they are more expensive. For a commuter you have enough to do in the morning just getting out the door without checking pressures.
That's my .02
John