>>373567For /out/, something with a neutral-white or warm-white and/or high-CRI emitter. That's the middle to right side of the pic. You get better color rendition, especially of browns and greens, and they won't mess up your depth perception like cool-white LEDs.
The rest is form factor, budget, and battery type. Check out
candlepowerforums.com for more info than you ever need.