I like the long bar of steel attached to the front, only, as a minimal idea. Easier to work with and, as Opie says above, it would make getting the safe out of the apartment/building a major headache that I'd expect thieves wouldn't want to deal with.
-- Robert --
NRA Life Member
"Giving Money and Power to Government is Like Giving Whiskey and Car Keys to Teenage Boys" - PJ O'Rourke