I've basically tried a lot of different LEDs that should be equivalent to 100w halogen bulbs. while this one is still a bit dimmer (maybe 90W?) but still a lot closer than all those other thin LEDs that are over its brightness - that's about $6-7 apiece. they correspond to about 45 watts. Also, those that say it's equivalent to 45W halogen bulbs are actually equivalent to about 30W. It's bigger and bigger than most, but it does the job, delivering about 90% the brightness of actual 100W halogen bulbs who replace them. I am generally satisfied, although they are a little more expensive.
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