So night riding season is fast closing in on us. Last year, I was running a 10deg 12V 20W halogen overvolted to 14.4V, it's awesome, but battery life is not fantastic, and it gets hot if you aren't moving. This year I'm looking to upgrade to a LED/HID system, and hope to still use my batteries (4.2Ah, and 5Ah packs. So the question is:
What light systems are good, have great value for money, and can be bought as just a light, not necessarily with the battery?
I've been looking over at the Trailtechs on Batteryspace and they seem to fit except for two things; they don't have a voltage regulator, so I'm not sure if 14.4 is too much voltage, and the options for bulbs are 6/12 degrees. With my halogen I liked 10degree, but I know HID have a different beam pattern, what would be closer?