Sorry if this is a repeated topic.
I'm trying to find the best compact u-lock that is
• As compact as possible, can be carried in my pants' back pocket
• Good security so it must be u-lock, not cables
• City use (SF downtown) only for day - evening time
• No overnight parking or parking in really bad neighborhoods
I currently use OnGuard Pitbull mini, but I find this rather heavy and big although I know it's a good quality lock.