Moving Company, moving a safe in California

#What is the weakness of the gun safes -- physical attack or lock
#manipulation?  Is this weakness common knowledge among burglars,
#along the lines of the "New York Method" for popping older U-shaped
#bike locks?

Generally, gun safes are relatively easy to open by forcible means,
for example pulling the dial, drilling to monitor the gate area,
dialing for gate alignment, and possibly offsetting the combination,
depending on where the drilling was done relative to the operating
date.  Ease of manipulation varies with the specific lock; some can
be opened almost automatically in a few minutes (especially with
appropriate specialized equipment) while some are hard to manipulate.
No need to manipulate when there are easier ways to open the safe,
except in cases where one doesn't want to leave behind any sign of
forcible entry.

#Are some safes better than others, e.g. Browning vs. Fort Knox vs.
#Treadlok vs. Liberty vs. National Security vs. Amsec vs. Tex Safe?

I'm sure some are better than others with respect to either or
both burglary and fire protection, but I'm not in a position to
make recommendations other than to visit a reputable safe & vault
specialty shop and solicit the advice of an expert safeman there.