I've used long and short shackle u-locks, and I much prefer the compactness of the evo-mini. Fits in your pocket, lightweight, and locks up rear+frame to just about any pole and most bike racks. If you are paranoid about finding a good place to lock up your bike, the evo-mini might be more trouble than its worth. However, I've found a place to lock up within a half-block of just about anywhere I throughout urban/suburban Twin Cities.