As everything else, it depends on what the task is, and outdoors is still a pretty wide term.
When I go hiking or fishing in the woods, I only need a reliable durable light with good runtime in a small size which uses regular batteries (in case of an emergency), throw is not that important. I have a cheap 12-led cluster light who has fullfilled all my needs so far. A SL PP 4AA Luxeon would probably also work as a general purpose light, but maybe to bright in close and not that much flood. Good size and durability though.
When I go boating (in our small boat), size doesnt matter, but throw(so we don't run into any rocks etc) and runtime does. So far I have used a handheld lantern type of light, dont know the english term, but it uses 4D-cells and has a handle, not the best runtime, so I'm looking for a magmod that can replace it.
But usually when I'm outdoors, I go to sleep when it's dark or it's bright enough anyway (summer nights are very short in Sweden, and there's not much fun sleeping outdoors or go fishing in the winter).