flashniac,
Obviously, the wise answer is going to be "It depends." But as I've been told, I'm lacking in wisdom, so let me answer you directly.
However, I'm ignoring the "3D" part of what you said above, OK? hehe. I like to hear myself talk sometimes.
OK. Production flashlights only:
Cost no object: SureFire M6 is one beautiful and amazing light, but it's expensive to run.
On a budget, rechargeable OK: TigerLight Gold System--can be bought with pepper spray or without (FBOP). FBOP version is 8" long and is what I have. It's a great bargain. One of the best values out there for big incan lights.
On a budget, rechargeable NOT OK: PT Surge. However, I don't own one of these myself, so take this recommendation with a grain of salt. Also, do NOT store it with batteries installed and buttoned up. Either remove the batteries or make sure that air can get in and out.
The StreamLights are probably something to consider, too, I suppose, but I stand by my absurd list. /ubbthreads/images/graemlins/evilgrin07.gif Absurd because it really does depend on what you need your flashlight to do for you and on how much money you can spend up front and on operations costs.