Bests & Worsts Reviews from Amazon

I bought a 2-pack of these 3 months ago. I liked the color so I bought another set last week. When I plugged the new ones in, I could see by comparison that the old ones were already down to about 25% of the brightness of the new ones. 75% light loss in 3 months is pretty severe. I wasn't aware that LED's faded this way. For comparison, I have a 5" tall USB powered color-shifting snowman LED light that cost me less than $20 that's been running continuously for six years and is still lighting up the whole room at night. Update: I added a photo comparing the two (new and old) to the product page.