i bought a pack from 2xlightdirect.com. they finally arrived today. i was in for a surprise: they are made in USA! they do look as bright as a 100w 750 hour bulb but there is a slight difference in color appearance. the 100w bulb has more red in the spectrum. also note the nice old fashioned inside frost glass.
$6 and change isn't a bad price either though hopefully it'll drop because if that's the price online it'll be like $10 a 2-pack in stores which is a little insane for light bulbs. Though these do impress me a lot. I wonder what they did to make halogen that much more efficient. they must haev played around with fill gases or something? they even last 2X longer too!
they use an IR coating technology applied to the capsule (its shaped like some low watt MH arc tubes) which reflects the radiated IR back to the filament and converts it into light. ge, sylvania and philips also make lamps with this technology but they are less efficient and mostly are made in reflector types.
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High lumens version. Now that is a cool find, Dave 
