Gizmodo did a review two years ago; five minutes and a cheap angle grinder will steal any bike.
http://gizmodo.com/5922074/the-best-bike-lock
Write down your serial number and keep it safe. Take photos of the bike, document all modifications. Call your homeowners or renters insurance company and verify your policy covers your bike and negotiate a nice deductible.
If the thief wants it, it is a low bar for them to take it.