I purchased an Executive Safe a few years ago and am happy to share that this has been a great little safe.  It is small enough to be installed in a closet, yet has sufficient space for storing important documents, a couple of handguns and jewelry.

The electronic lock is simple to program and has never failed to open.  I used to change the battery once a year, but installed a Lithium 9V battery at last change out.

In comparison to other similar products, I think the Sentry Safe is the best option based on features, size and price point.