Check out some independent testing results at the following links.

http://www.stichtingart.nl/sloten_resultaat.asp - Check 'Foto's tonen' for photos.

http://www.soldsecure.com/search?pro...mpany=&action=

Oh, and the top of the line Kryptonite locks are very secure. For some odd reason there are people on this forum who don't like Kryptonite, which is totally bizarre as in my experience they have been a stand up company that makes great products.