Hi, can anyone recommend a single pannier bag for a newbie commuter. I usually take the car to work a couple of times a week and will use it to take shirts and underwear. I keep trousers and shirts at work for when i commute on a motorbike during the warmer months. I've got a rack, but would like a pannier bage for other stuff, and the shopping that Mrs Z usually wants me to pick up on the way home. Anyone know of a decent, inexpensive bag for my first foray into shopping by bike. I thank you, Z.