Consumer reports magazine tests dead-bolt locks.

Medeco high security dead-bolts took everything they could dish out and received a grade of excellent.

Dead-bolts in general were found lacking in kick in attempts or opened easily with a battery drill. They also tested the electronic locks which did not pass mustard.

Consumer Reports rates dead-bolt locks http://www.consumerreports.org/cro/magazine-archive/2011/june/home-garden/best-door-locks/overview/index.htm