Well, there's a Surefire Aviator and a Streamlight Protac 2L-X on my bedside table, so I'd probably shove both in my pocket as I hightailed it out of there. If I could only take one, probably the Surefire as it's a little more versatile and there's another Streamlight in the car (and the Surefire cost more, so I'm less enthused about forking to replace it), though realistically it would depend on why I need to scarper in the first place.