LED's baby, L.E.fuckingD's. I've been keep loose tabs on this technology for a while now and its looking like its ready to bust into the mainstream in a big way.
- Long life ~100,00 hours
- Low volt D.C. (this means cheaper houses if lighting circuits can be done with lighter gauge wire)
- Low power draw. - lower operating lifetime costs. Lower than even flourescent or screw shell Compact Flourescents (which I highly recommend)
Lumileds.com(PDF spec sheet)