I chose this red 921 bulb because another reviewer said they bought the amber one and it was too bright to look at. Since it was in my third brake light, I figured the brighter the better. As you can see from the photo the halogen actually looks a bit brighter than the Alla LED when bare. However, when comparing inside the case behind the red diffuser, the difference in brightness almost disappears; the only thing that stands out is that the alla red led is noticeably redder; although this shouldn't come as a surprise if you've looked into LED bulbs before. (Also note that there are currently three bulbs in this brake light; the photo is for comparison purposes only.) Overall I give this brake light a qualified "recommend". I will report in this review if these pears die soon.
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