I've got some new gadgets on the way!
Yesterday I ordered a BuckPuck and a BuckToot to drive my bike lights. I've got a homebuilt Dual-Luxeon III setup right now, but current limiting is via a big 5W resistor. *blech* It's time to take this into the 21st century! The 1000mA BuckPuck will drive the two white 3W Luxeons, at over 90% efficiency. I'll also be able to dim the lights (should I ever need to...). The BuckToot will run dual red 1W Luxeons in the rear. Everything will be powered by a 9V, 5400mAh lithium-ion battery.
And yes, I'll post pics when it's done.