Just to put things in perspective, when you compare the Surefires with the Fenix torches, you'll find that the Surefiles are typically brighter (in some cases, many times brighter) and much more ruggedly built than the Fenix lights.
I have Surefire L2, L4, 2xE1L for LED based lights and E1e, 2xE2e, E2d, A2, and C3 for incandescent based torches.
The L2 is a 2 stage, 2x123 battery LED with around 80 lumens at high brightness. The L4 is a single stage LED with around 80-100 lumens output. Either one is more than tactically bright and will temporarily blind someone if you shine them into their face.
The E2 series lights are good for about 60 peak lumens, also tactically useful. The C3 is serious illumination at 200 lumens output!
The incandescent lights are all unregulated output except for the A2 which is quite unique with a 2 stage operation. Low level is 3 lumens LED unregulated, and high is REGULATED 50 lumens. (Note: 55 lumens is the rated high brightness of the Fenix L2T and the A2 lights up a far broader area)
Ed, if you're going to get your wife a Surefire, consider the E2d. It has a crenelated bezel and tail cap for self defense. You need to be aware that they eat CR123 batteries. Surefire is a good place to buy 123 batteries by the box. They charge 21 bux for a box of 12. The price has gone up a bit since I last bought batteries from them. Last time I bought, they were 1.25 each. Even with the increased prices, it's still cheaper than what you would pay for a 123 battery at a local store, which will nick you for about 6 bux for each battery!
Then if you want the O2 of the flashlight world, get the Surefire 10X Dominator! 500 lumens!!!