I've bought numerous Fenix lights.  Various P3D's and a T1 tactical light.
The Fenix P3D is very compact, bright, and versatile.  However it is not necessarily the best tactical light in the world.  It is quite slippery compared to a Surefire, it's dual turbo/strobe function could cause some difficulty in an emergency, as it is easy to accidentally switch between the two options.  There is no momentary "on".  The light is either on-or-off.  Also the reflector is designed for a short range flood instead of long range throw.  For this reason the P3D does best indoors.  It is a good general purpose flashlight.  Just about everyone in my family has one.
The Fenix T1 is a somewhat different animal.  It is a true tactical light.  The T1 slightly larger/heavier than a Surefire 6P.  It has a fabulous reflector that has great flood and throw.  It provides light useful for identification at 100 yards.  It will light up a street sign very well at a range of over 200 yards.  Beam quality is nice and smooth like a Surefire light.  There is a momentary "on", with no strobe function, so it is straight forward to use.  It is truly built like a tank and heavy enough to be used as an impact weapon.  This is the light I use outdoors.  The ergonomics aren't quite up to Surefire standards, and it's still somewhat more slippery than a Surefire, but the T1 is my go-to light.
Another very reasonable solution is to upgrade a standard Surefire light with a new LED lamp.  DealExtreme has latest generation Cree R2 LED's at very reasonable price.  These drop-in units have a dark halo around the brightspot.
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