Originally Posted by Drew Eckhardt

Germans make the best bicycle lights. presumably due to the combination of laws requiring bicycle lights, laws requiring intelligent optics design on them, and precision German engineering.

Order a Busch & Muller Ixon Iq Premium from bike-discount.de in Germany. $47 + $10 for a charger + $24 flat rate shipping + $4 plug adapter from amazon + $17 for 4 2450 maH AA Panasonic Eneloop batteries from Amazon = $102.

It's fairly bright, casts a uniform light field so you can see better, has a cut-off so you won't dazzle drivers, gets 5+ hours on high, has no separate battery pack with a cable that goes bad, and takes AA batteries if you need to swap for a long ride or they wear out.