+1 for Topeak racks. I like the look of a bike rack, so I had no qualms getting a standard (i.e., not a seatpost) rack. I got the Topeak Explorer over the holidays and have a compatible rack trunk w/ fold-out panniers. The quick track system is super convenient! I find my rack and trunk to be great for commuting and they'll also be good for some of those longer fair-weather weekend rides, too, with extra water and fuel (i.e., food) on board.