I always did like my very first high powered flashlight that I bought. It was almost 5 years ago, the Trustfire TR-801. It’s a very well constructed light with a unique design that lends itself to very good waterproofing and excellent heatsinking with it’s pill that screws directly to the flashlight body instead of screwing into the head.
Well this is pretty interesting, they’ve updated this into an XM-L flashlight now.
http://dx.com/p/new-8011-cree-xm-l-u2-1000lm-2-mode-white-flashlight-silver-1-x-18650-182214