The Lockpicking Lawyer has a great Youtube channel. He's a very skilled lock picker and he delights in destroying lock company's marketing hype. I also like his deadpan delivery and no fluff editing style.
He recently demonstrated that a small, easy to conceal hand-held ratcheting cable cutter could snip four steel bike lock cables at once. He's also shown that a handheld Ramset tool can instantly destroy even the beefiest, most expensive padlocks. Lesson: never leave a bike you want to keep outside.