Locks that work

lock question

Hi,

What are your views on these locks, either as the primary / exclusive lock or as a supplement to a good U-lock?
http://www.masterlock.com/products/p...Specifications
and
http://www.masterlock.com/products/p...Specifications

It would interest me to know what you see as their weak points.

In case you wanted to trash them, I thought that I would pose the question through PM rather than in a thread. BTW, I am not affiliated with Master or any other lock company.

Many thanks,
s

These types of locks have been asked about before, and sorry, but they just don't make the grade.