Geek story of the week. My 18V drill light has been working great and shines much further than the 16V light....It has about a 1 block throw and lights the side of the road nicely.
So the other night while coming home from work, I see out of the corner of my eye, 4 brown sticks- no legs!

a deer! We looked at each other and freeked! After she dashed off, I switched off the geek light and rode with just the LED... we're talk'n no way. That deer would have bolted right in front of the bike.
Then about 3miles up, it was pitch dark/raining and somebody forgot to pull in their tall blue recycle can. The geek light spotted it at about 100 feet! The LED would have spotted it at about 5' and I would have had to swerve into traffic or topple over it!