Writing this review at the 15-day point, so longevity cannot be evaluated. This aside, overall, these are great, the temp is indeed about 5000K and as such the rendering is just beautiful! Somewhat brighter than 40W incandescent bulbs which probably dimmed with age, yet the improved brightness is not offensive. The light output is very close to incandescent, no disappointments with dim regions within the (white) refrigerator interior. Lastly, it's nice not turning on an 80 watt heater (2-40W bulbs) and warming food up every time the fridge door is opened. +5 upgrade, I do recommend!