I use an ABUS Bordo because it's easy to carry around. I usually lock up to bike around an object with the single lock. People are pretty relaxed around here ... I see €2500 e-bikes locked with u-locks around lightpoles on the weekends (although it's usually at a weekly outdoor Jazz breakfast, which tends to attract different clientele.)

http://www.amazon.com/Abus-Locks-650...rds=abus+bordo