On a second kitchenette I have the halogen lamps. Turn it only the LED lamps, there is a nice warm-white. In direct comparison with the old halogen lamps they act, however white and almost brighter. Whether now but deliver the old halogen lamps or the new LEDs the more beautiful or better light, I can not decide.
Together with the LED transformer there is a minimum, not disturbing delay. I have noise or other interference can not perceive.
I'm going to replace sooner or later the other 4 downlights by such LEDs. Instead of about 160 W then only about 20 W.