Like other reviewers have commented, this lock can be clunky to lock and unlock. It's also not the sort of thing you'd take on a ride with you due to its size, weight and shape.
Having said that, mine has withstood a screw driver, being jammed with screws and being repeatedly smashed with a brick. The brick came off worse and I still have my bike, which is suppose means that its done its job : )
I now need to remove the lock from the bike, which still has a screw in it. Hmmm.... Comments from other reviewers re Abus service has given me second thoughts about whether the replacement will be an Abus lock though.