in addition to ken's post, leds are rated in "nits" for brightness. the higher the nit rating the brighter the led. i haven't really looked into these leds but if their technology is the same as the sign biz: to each LED there is either 6 or 4 pixels. a 4 count pixel is a brighter led even at the same nit rating. average life of a LED is 11 years.When buying LED'S, make sure that you are comparing apples to apples. I believe that AAW has 128 LED'S in theirs. I am not 100% but I do not think the other brands have that many. You do not want your tail lights looking like trailer lights on an 18-wheeler.