Locks that work

The TiGr is in the full review in June 2012 men's journal page {{edit here:- http://www.mensjournal.com/expert-advice/torture-test-bike-locks-20120925 }} - Apparently, they were able to hacksaw through it as well, and they can't even have been using a carbide blade, as it didn't touch any of the hardened locks.

Thanks for the links. Yeah, metal blades for sure, softer than the hardened steel locks they were trying to cut.

So the Knog Strongman can at least defeat 24 inch bolt croppers and metal hack saw blades. I wish they used 42 inch croppers though. To see if it could defend against more serious theft attempts.

I think the knog has a round shackle under all that silicon - I seem to recall seeing a review where they cut the silicon off and cut it with bolt cutters. It looks like it might be ok as a secondary lock, although overpriced. There's video review of a few 13mm locks here:- http://gizmodo.com/5922074/the-best-bike-lock again they're not using the best choice of blades, discs or croppers.

Similar to the other link... decent hardened steel locks (even the lower end like that 12mm Abus) defeated the mid size attacks like bolt croppers and a hack saw. I've seen high end chains like 13mm hardened steel being bolt cropped in seconds like on the Almax Security promos, ITV programme, youtube, etc. So probably the Knog Strongman could also be bolt cropped. I wish they would test it properly. So then the Strongman might be OK for a secondary lock, but as you say it's overpriced. It's about £60 which is about the same price as the Abus 401 for example. The Abus doesn't even come with a mounting bracket, so the Strongman isn't that overpriced. Then again you can get a Fahg Mini for £50 new if you shop around. So many paths to take...