Hello justjames and welcome!
We use the Proven Locks also. I followed a recommendation by AlbertNTerri and ordered the Ft. Knox puck upgrade. It is an impressive lock. Much heavier and more solid than the puck lock that came with the Proven Locks. In addition, the key is many times more complex. While not cheap, it seems like a worthy purchase, if you opt for the Proven Locks.
https://ftknoxlocks.com/shop/ols/products/abloy-sentry-cylinder-in-ft-knox-steel-puck-lock-body
Good luck,
Kirk