A naked bike is the way to go. I ride a Tuono and commute on it a daily. The bike has all the performance you can utilize on the street and comfortable ergos, too. The wide bars are great for manueverability and the upright ride position is great for visibility in traffic. In the straights the full-on sportbikes will easily take you but down low or in the twisties they can't hang. Plus, there is nothing like the growl of a nasty twin!