WolfSpeed (formerly CREE) (WOLF)

[StockSniper00]

You're right that the human eye doesn't really notice and that I referenced L80 with the 20% decline but it hits L70 not to long after. Some lumen depreciation is actually fairly linear. Induction lighting doesn't have a knee in the curve until its about to die. Some lamps such as metal halide are basically straight down. LED's shouldn't go past 90% before 20K hours.

I have tested all the major LED brands as I am a category manager for a very large bulb retailer. We test everything we stock, as well as, our competitors products. The brands you listed actually all better performance ratings according to our testing, some by a lot, some by an inch.