Hey everyone. I am headed back to the states next week after spending a year in Korea without a car. I am planning on commuting by bike. I was wondering whether people preferred racks and panniers or a trailer. I will be wearing cycling gear and then changing at work. It seems like using something like an enclosed kids trailer would be the most convenient since you don't have to strategically pack your stuff. Plus it won't change the handling of the bike too much. What is everyone's personal preference?