Hi Russ,
I've gone with a modern reconditioned safe which got from these people. http://www.atozsafes.com/index.aspx
There may be issues with your insurance if the safe is not rated.
Not the best looking bits of househould furniture but you could disguise it. 8)
I did think about a vintage safe but then you have an issue of the safe being on display and people thinking you have something worth having. Plus the older safes tend to be key only and you could have the situation where if someone is in the house they try and make you (or whoever is in) open it.