A few more thoughts about lights.
After many years of buying many lights, I grew weary of proprietary formats*. While many of the lights referenced here are good lights, and often have performance benefits over the lights I currently have in my cars and kits, they have a big downside.... time.
Given enough time they will be obsolete, and because they are proprietary you will be forced to replace them if you want newer tech which can be expensive depending on how many lights you have.
As a result I switched to lights that use the P60 "drop in" style bulbs. While these lights have some inherent compromises, you can simply replace the bulbs when a newer, better, brighter, longer lasting LED tech comes along.
The Solarforce P2P forward clicky light bodies are very nice for any price and insanely nice for $23.
Combine that with the $11.50 single mode XPG drop in makes a really nice light for $34.50 light that you can later swap out the "bulb" later if you feel the desire.
-john
* Technically the P60 format isn't an open standard, but it tends to be close enough.
P60 thread on CPF: P60 sized led drop-ins (part 3)
http://www.candlepowerforums.com/vb/showthread.php?t=217252