https://www.flickr.com/photos/384262...7651076813781/
There are a lot of new bicycle lamps available now with Cree's latest Neutral White XM-L2 and XP-G2 LED.
You'll notice from the pics these lights don't bathe everything in blue the way the older Cool White lights did.
I'd advise buying purchasing solitary lamp heads and throwing together your own 8.4V Li-ion battery packs with off the shelf parts. You should get over to to three hours run time on high, about twelve on Low, with this kind of set up. There's a lot more info over at mtbr.com/Lights and Night Riding. Also on Amazon, an incredible deal,
Amazon.com : MudderŽ CREE XM-L L2 2-LED 1200LM 3-Mode Flashing 10-Level Brightness Adjustable Rechargeable Headlamp with Battery Pack & Charger Set for Outdoor Cycling, Hiking, Camping : Sports & Outdoors Haven't picked one up myself so can't attest to its quality (am assuming the batteries are not great) and this one
AFAIK is just Bright White (Cool but not extemely blue.) The same package is available at Kaidomain.com in Neutral White, but their free shipping takes several weeks. But if you can wait that long, I'd say go to GearBest and pick up their Neutral White Yinding or SolarStorm X3 or XT-40 lamps, along with their SolarStorm battery case. (Coupon codes available in the mtbr threads.) Then pick up a couple pairs Samsung 18650 protected cells from FastTech.com, the 2600mAh are the best bang for the buck. If you don't already own a 8.4V charger you should probably pick up a good balancing one like the VC2 from XTAR. Alternatively, if you're starting from scratch,
MagicShine's tail light, battery pack and charger is not a bad deal on Amazon for under $55; just purchase a Y cable from GearBest or Kaidomain along with your choice of 8.4V lamp head, and you'll have a complete system, front and rear, for about $85.
My three cents.